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19 octobre 2018
16:16
[INSPIRE by clouds] Cette année, le rapportage est au 15 décembre
sur GeoRezo.net - Géoblogs

Depuis 2010, le Géocatalogue opère une extraction en fin d'année, théoriquement le 31 décembre et, en pratique, plutôt vers le 10 janvier.

Cette photographie des métadonnées françaises sert à produire le rapport de la France sur la mise en oeuvre d'INSPIRE. Il est envoyé à la Commission européenne le 15 mai.

Dans le même mouvement que celui décrit dans ce billet, la Commission propose un changement de processus : moins d'indicateurs, plus automatisés (à partir des métadonnées). Cette proposition est soumise au vote des États membres fin novembre mais, comme elle sera d'effet immédiat, il nous a semblé utile de faire comme si elle allait être adoptée. Pour les autorités publiques françaises, cela ne changera pas beaucoup, nous avons toujours pratiqué ainsi. Toutefois, un effet de bord sera le changement des dates-clés.

Comme nous avons compris que cette date d'extraction motivait parfois des mises à jour in extremis, attention : à partir de cette année, le rapportage sera établi à partir d'une extraction du 15 décembre.

11:24
[Theia] La famille s'élargit
sur Séries temporelles

Le photographe (et directeur technique) a du sortir son objectif grand angle pour photographier la famille Theia, lors du séminaire bisannuel qui avait lieu les 17 et 18 octobre 2018 à Montpellier. Ce fut un véritable stage de motivation, et un grand plaisir de recevoir tous ces retours positifs sur les travaux des chercheurs Français en télédétection, et sur les efforts des équipes de développement, de distribution et de diffusion de données. Les présentations seront très bientôt rassemblées sur le site de Theia.

Un grand merci à l'équipe d'organisation (Isabelle Biagiotti, Nicolas Baghdadi et Arnaud Sellé)

11:12
ACDéchets : Une nouvelle application pour localiser les déchets en forêt !
sur Veille cartographie

Cet article ACDéchets : Une nouvelle application pour localiser les déchets en forêt ! est apparu en premier sur Veille cartographique 2.0.

L’Office National des Forêts appelle à l’aide. Nous dénombrons environ 1500 tonnes de déchets sauvages dans les forêts domaniales d’Ile-de-France ! Ils représentent un coût d’un million d’euros pour leur évacuation. L’Office National des Forêts appelle à l’aide pour cette question urgente. L’ ampleur de ces dépôts est tellement importante qu’il ne peut pas gérer seul […]

Cet article ACDéchets : Une nouvelle application pour localiser les déchets en forêt ! est apparu en premier sur Veille cartographique 2.0.
11:12
L’antarctique comme vous ne l’avez jamais vu !
sur Veille cartographie

Cet article L’antarctique comme vous ne l’avez jamais vu ! est apparu en premier sur Veille cartographique 2.0.

L’antarctique est le continent probablement le plus hostile pour l’Homme, mais depuis quelques semaines il est aussi le continent le mieux cartographier selon plusieurs chercheurs américains. En effet, à partir de plusieurs centaines de milliers d’images satellites, prises entre 2009 et 2017, l’équipe de la National Geospatial-Intelligence Agency (NGA) a créé un modèle d’élévation […]

Cet article L’antarctique comme vous ne l’avez jamais vu ! est apparu en premier sur Veille cartographique 2.0.
11:11
Le satellite Aeolus pour cartographier les vents
sur Veille cartographie

Cet article Le satellite Aeolus pour cartographier les vents est apparu en premier sur Veille cartographique 2.0.

Le 22 août 2018, l’ESA a lancé et mis en orbite avec succès le satellite Aeolus (nom du dieu du vent dans la mythologie grecque). Ce satellite, placé sur une orbite polaire héliosynchrone à 400 km d’altitude, aura pour mission d’étudier les vents de l’atmosphère terrestre. Durant ses trois années de vie, Aeolus délivrera des […]

Cet article Le satellite Aeolus pour cartographier les vents est apparu en premier sur Veille cartographique 2.0.

18 octobre 2018
11:18
Carte "covélotaf" pour aider à mieux se déplacer en bicyclette
sur Chroniques Cartographiques

Petit coup de pouce pour une belle initiative (et étant cycliste moi-même) pour cette carte interactive. Si vous hésitez encore à laisser votre voiture au garage au profit du vélo pour vos déplacements du quotidien, alors cette carte vous permettra de...

7:00
GIS and decision support (3): a tool to create fuzzy criteria with ArcMap
sur Blog SIG & Territoires ---- Le blog SIG pour la gestion territoriale

In the two previous articles ( GIS
and decision support (2): the crossing of two fuzzy criteria
, and GIS
and decision support (1): ranking with fuzzy numbers), we have discussed examples for using fuzzy
logic to process geographic information .
It is time to get your hands dirty. This is why we put, here, at your
disposal an ArcGIS command to create a fuzzy criterion.

In a second stage (the next
article) we will discuss how to perform the
aggregation of two fuzzy criteria with another command, which we will put at
your disposal as well.

As
we have seen in the examples discussed in previous articles, the first step to
process the information as fuzzy is to transform the values of a classic attribute into a fuzzy number:

The core
is the set of elements
that wholly belong to the criterion, that is to say,
the degree of membership is worth 1.
The support is
the set of elements belonging, even very little, to the criterion,
that is to say, the degree of membership is different from 0.
The height of a fuzzy set is defined by the maximum degree
of membership. We will use 1 as default value,
but it is clear that there are situations where the maximum value of a criterion is not synonymous of maximum satisfaction (1).

At the bottom of this page you will find the links to download an
ArcMap command to create a new attribute, from an existing attribute, and meeting the
criteria of a fuzzy number.

The command Fuzzy Criterion

A criterion is a numeric field of a
layer belonging to a
class of entities. The
content of this field will be transformed in
another field, numerical too, but depicting values between 0 and
1. This transformation is carried out to match
the values of the original field with a degree of satisfaction of the
criterion: 1 corresponds to total satisfaction, 0 to total dissatisfaction, the others values
being partial satisfactions.

Once
the command is installed, the button

displays the following interface:

The command works on
shapefiles (shapefiles) and geodatabases files. It
does not work on personal geodatabases (.
Mdb), the Enterprise geodatabases, and SpatiaLite
bases. This is
due to the fact that the command writes a metadata file
in the layer Workspace . This is possible with
shapefiles and geodatabases file (directory. gdb). There is no integrated protection in the command! If you try to
work with a personal geodatabase, it will work
… until crashing! (sorry …).

Transformation
methods

The window proposes five transformations of a field with
fuzzy criterion (fuzzy
number): Type1: The first corresponds, in fact, to a non-fuzzy
number, but allows the aggregation of a non-fuzzy criterion with fuzzy criteria.

The criterion is defined in an exact way. All values
different from the one input in the » a: «
window will be set to 0.

Type2: The second allows to define a fuzzy number where only an exact value (« b: ») delivers full satisfaction. Values below “a:” and above « c: » will have zero satisfaction, while values between « a: » and « b: » and between « b: » and « c: » will correspond to values between 0 and 1. These values correspond to the value of the curve. This corresponds to an exact number with a given uncertainty.

Type3: The third allows establishing a fuzzy “threshold “. All values below » a: » will be zero, all values above « b: » will be equal to 1, while the values between « a: » and « b: » will have values between 0 and 1. This corresponds to the larger set than the set with a given uncertainty.

Type4: The fourth is a reversed threshold. All values below « a: » will be equal to 1, all the values above « b: » will be null , while the values between « a: » and « b: » will have values between 0 and 1. This corresponds to a smaller set than the set including some uncertainty.

Type5: The fifth method allows creating a classic fuzzy criterion. The range of values between « b: » and « c: » delivers total satisfaction and have a value equal to 1.
Values below » a: » and above « d: » will be excluded and will have a value equal to 0. Values between » a: » and « b: » as well as those between « b: » and « d: » will have values between 0 and 1. This corresponds to the typical fuzzy number, with its core and support. As we have indicated above, the default height is 1

Processing aids:
field
statistics

The
button

displays a window with the description of the fuzzy criteria included in the data layers.
The following window shows an example of metadata for a fuzzy criterion:

displays a window with the description of the fuzzy criteria included in the data layers.
The following window shows an example of metadata for a fuzzy criterion:

The metadata is
stored in a separate file ( .fzy ),
managed by the command .
The management of these files
is automatic. For example,
the elimination of metadata corresponding to a fuzzy
criterion if being
erased manually from the
entities class table.
On the other side, if you
move the layers in different directories or geodatabases, you will have
to move the file . FZY manually.

Available languages
+A drop
down list selects the
language to use.

Available languages:
• French ( default )
• English
• Spanish
• Vietnamese

Even if the command
is supposed to go from
one language to another without any problem , depending on the Windows version used
, it is safer to close and reopen the order
after selecting another language in the drop-down menu .

ArcGis
versions

The command can be
used with ArcGis versions between 9.2 and 10.3, and
with Windows XP , Vista W7 and W8.

Tool download
(version
10.3.0.6)

The
following links will download the (.zip file) command and the manual of use (.pdf) which covers the content of this article.

dllcriterenombre

Manual use criterion blurring

Tools installation

The tools are provided as . dll file together with an Access database . Copy and unzip the command file in a
permanent directory of your disc .

To
install you must go through the Customize menu -> Customize Mode
of ArcMap.
The customization window opens:

In the Commands tab , click the Add from a file button. Select the fuzzy_numberV92_103ML.dll file that you will have, beforehand, copied in a permanent directory of your local disk WITH the Text.mdb file delivered in same time. This file contains the different language versions used. It’s not very elegant, but it allows the command to operate without special adaptation with Xp , Vista, W7 and w8.
Click OK. The following message must appear indicating the installation has been completed without any problem.

Click OK. In the available Commands window you will be positioned automatically in the category NASCAcommands and you will find the available tool: Fuzzy Criterion.

In order to use it , click-drag on the command icon and drop it in an open ArcMap toolbar.

In the next article we will discuss the second
tool , which allows the
aggregation of two fuzzy criteria

0:40
Intelligence Artificiel et SIG
sur Veille cartographie

Cet article Intelligence Artificiel et SIG est apparu en premier sur Veille cartographique 2.0.

La technologie émergente de l’intelligence artificielle, ou IA, croise plusieurs techniques simulant les processus cognitifs humains. Existant depuis les années 60, la recherche s’est développée récemment au point de multiplier les applications : voitures autonomes, diagnostics médicaux, assistants personnels, finance algorithmique, robots industriels, jeux vidéo… L’explosion de la puissance […]

Cet article Intelligence Artificiel et SIG est apparu en premier sur Veille cartographique 2.0.

17 octobre 2018
0:46
GIS and decision support (4): a tool for aggregating fuzzy criteria with ArcMap
sur Blog SIG & Territoires ---- Le blog SIG pour la gestion territoriale
In this article we will discuss how to cross two fuzzy attributes, with
a command that we put at your disposal. The « Flexible Aggregation »
command allows the aggregation of two fuzzy criteria.
The interface offers three questions to the user to define the desired
aggregation formula. Then, the tool proceeds to the union or intersection of
the two criteria by producing a new data layer. This layer contains the data of
the two input layers plus one field with the result of the calculated
aggregation.
It is essential to create the fuzzy criteria before proceeding with their
aggregation.
In the case of non-numeric criteria, a manual transformation has to be executed
by the user to match numeric codes to the text attributes.

At the end of the article, you will find the download links. Firstly, we
will discuss how to use the command, then how to install it.

Unfortunately, it is not enough to have an order to perform the job; we
must also understand what we do with it. This will refer to the next two
articles in this series, where we describe in detail the theoretical fundamentals
used by our orders.

Using the command

The button

displays the following interface

You must select which layers to use for the aggregation in the list of
available layers. The command works with shapefiles and geodatabases files
(gdb). It does not work with personal Geodatabases, enterprise geodatabases,
and Spatialite databases.

Below each layer, you must select the field, containing a fuzzy number,
to be used in the aggregation.
The layers in the list are automatically selected from the polygon layers.
Numeric fields are displayed, as long as their values are between 0 and 1.
Those that start with fzy_ are automatically produced because they were created
by the Flexible Criteria command (see previous article: GIS and decision
support (3): a tool for creating fuzzy criteria with ArcMap). However, you may have fuzzy
fields that do not result from the Flexible Criteria command and
that can be used for the aggregation.

Definition of the mathematical model of
aggregation.

The user must check the result of the three proposed aggregations. The
command tests the consistency of responses because some combinations are not
allowed.
For example, the result of the third question cannot be more unfavourable than
that of the first question. Indeed an average satisfaction of the first
criterion (third question) cannot lead to a more unfavourable result than a
total dissatisfaction (first question).
In fact, there are only 50 possible triplets as an outcome of these issues.

Definition of the type of aggregation operation.

The user can choose the aggregation operation:
1- The intersection of the two themes: the resulting theme will
only include the overlapping areas of the two themes to be aggregated. For
these areas the result of the calculated field is the product of the model
established by the answers to the three questions;
2- The union of the two themes: the resulting theme will include
the full extent of the two input themes. Zones with only one theme will have an
aggregation result of 0. Therefore, it can have two types of zones with the
field calculated at 0: those that correspond to a cross of two input values
giving as result total dissatisfaction, and when the dissatisfaction results
from a lack of data.

Showing the aggregation result

You have to check a box that allows you to
disable the automatic loading of the result in the ArcMap map window.
If it is not checked, the resulting layer is loaded with a pre-set rendering:

Five classes are calculated and displayed with a blue gradient:
• Entities resulting in 0
• Entities whose result is between 0 and 0.25
• Entities whose result is between 0.25 and 0.5
• Entities whose result is between 0.5 and 0.75
• Entities whose result is between 0.75 and 1

Process tracking help: metadata

You do not have a button in this command allowing you to consult the
metadata of the fuzzy transformations. On the other hand, the resulting fuzzy
attribute is very explicit in the metadata of the layer. To view it, you must
use the Fuzzy Criteria command and click the attribute, then click the metadata
button.

The metadata is stored in a separate file (.fzy), managed by the
command.
The management of these files is automatic. For example, the elimination of
metadata corresponding to a flexible criterion if this criterion is manually
deleted from the table of the feature class.
However, if you move layers to different directories or geodatabases, you will
need to move the .fzy file manually.

Available languages

A drop-down list allows you to select the language to be used by both
commands.
The available languages are:
• French (default)
• English
• Spanish
• Vietnamese

Depending on the version of Windows used, it is sometimes necessary to
close and reopen the command so that all texts are in the chosen language.

And, for some unfathomable computing mystery, in some configurations of
Windows 8 the option es (Spanish) does not appear.

ArcGis versions

The commands can be used with ArcGis versions between 9.2 and 10.3. And
regarding Windows versions, controls work in Windows XP, Vista, W7 and W8.

Tools installation

The tool is provided as a .dll file.
To install it you have to go through the menu Customize -> Customize
mode of ArcMap.
The customization window opens:

On the Commands tab, click the Add from File button. Check the fuzzy_agregationSA92_103ML.dll file that you have previously copied to a permanent directory on your local disk, with the Text.mdb file that contains the different language versions.
If you already have the Fuzzy Criteria tool installed, you do not have to copy the Text.mdb file, it is common to both commands.
Click OK . The following message should appear to indicate that the installation was successful.

Click OK. In the available Commands window you will be automatically positioned on the NASCA commands category where you will see two available tools: Flexible aggregation and Flexible Criteria (if you have already installed the Flexible Criteria command

In order to use them, click-drag on each of the commands and drop them into an open ArcMap toolbar.

Download Links (Version 10.3.0.35)

dllagregation

flexible agregation user manual

Known Issues

In addition to the disappearance of Spanish from the drop-down list of available
languages, the most common problem is the use of the toolbox to make the
intersection or union of the input layers.

We chose to keep the same code, regardless of the ArcMap version. The
command runs for versions ranging from 9.2 to the latest, the 10.3.

In order to use the toolbox, it is necessary for the program to find the
corresponding ArcToolbox directory. As versions change, the path
has been changed several times, and sometimes the command cannot find it.

If this is your case, you will have an explicit message, telling and
inviting you to enter the correct path in a text file, created by the command
in the same directory where you placed the file. dll.
- Open the arcgishome.txt file with the notebook.
- Type the ArcGis installation
  path, enclosed in quotation marks, for example: C: \ Program Files (x86) \ ArcGIS \ Desktop10.3
  « . Do not finish the path with a » \ « .
- Restart the command, everything
  must work without problems.
Go to the next article where we discuss the theoretical foundations of
the operation of the two commands.
16 octobre 2018
2:02
GIS and decision support (7): a tool to create fuzzy qualitative criteria with ArcMap
sur Blog SIG & Territoires ---- Le blog SIG pour la gestion territoriale
In a previous article, GIS and Decision Support (3): A tool for creating fuzzy
criteria with ArcMap , we have seen a tool for transforming numeric
attribute into a soft attribute (fuzzy number).
In this article we will discuss and put at your disposal the last one that
makes it possible to create a soft attribute (fuzzy number) starting from a
text attribute containing a classification of the entities.

The tool is composed of a command, « Text criterion”,
that makes it possible to transform a textual criterion into a fuzzy number.
The original criterion is a text field of a layer of a feature class. The
contents of this field include classified values that will be transformed
into another field, numeric, but with values within the range 0-1. This
transformation takes place to match the values of the origin field with a
degree of satisfaction of the field, criterion: 1 corresponds to a total
satisfaction, 0 to a total dissatisfaction, the other values being partial
satisfactions.

Using the command “Text criterion”

Once the command is installed (see below), the
button

displays the following interface:

Command
interface Text criterion

Warning: The command works on shapefiles and Geodatabases
files. It does not work on personal Geodatabases.

The window is divided into two panels:
- The first one allows to select
  the attribute to be transformed in a fuzzy number,
The second allows to define the transformation
values.

Choosing the attribute to be transformed

The “Data Layer “window displays
the different layers loaded in the ArcMap window.
By selecting a layer in this window, you get the list of text attributes
available in that layer.
The “Non-Text Fields » window displays the other attributes
present in the attribute table of the selected layer but are not text fields. The
command automatically filters the fields of type OBJECTID, GRIDCODE,
shape_area, etc.
You can also check the box “Fields with value 0-1 « . In
this case, only numeric fields with values in the table between 0 and 1 will
be displayed.
Warning! To this end, the command calculates the statistics of each
numerical attribute. This process takes a lot of time, depending on the number
of numeric fields and especially the number of records. Try not to use this
option too often.
The metadata button allows displaying the metadata (criterion,
date, etc.) of a fuzzy attribute present in the attribute table. To use it, select
the field in the list of non-text fields, and click the metadata button.
Once you have selected an attribute in the Available Attributes list,
you will see the list of different values present in the attribute table.

Display
of the classification present in the attribute table

The command also gives you a name for the new attribute to be created. You
can modify it, knowing that it will be limited to 10 characters if it concerns
the processing of a shapefile.

Choice of transformation values

The definition of transformation takes place in
four steps:

Configuration
of the criterion transformation table

The first concerns the definition of the number of satisfaction classes
to use (1).
You can choose 3, 5 or 7 classes. Depending on the choice, the number of
available classes (3) changes automatically.
If you select 3 classes the command will propose the following transformations:

• Excellent will be transformed into value = 1
• Average will be transformed into value = 0.5
• Excluded will be transformed into value = 0

If you select 5 classes the command adds the options:
• Good which will be transformed into value = 0.75
• Poor that will be transformed into value = 0.25

If you select 7 classes the command will propose the following
transformations:
• Excellent which will be transformed into value = 1
• Very good which will be transformed into value = 0.83
• Good that will be transformed into value = 0.67
• Medium that will be transformed into value = 0.5
• Poor that will be transformed into value = 0.33
• Very bad which will be transformed into value = 0.17
• Excluded which will be transformed into value = 0

Once you have chosen the number of classes,
select the values in the left window (2), tick the satisfaction index you
want to assign to the selection (3), then click on the >>
button to pass the values to the right window

The number between 0 and 6 indicates the choice assigned to each value
- 0 -> Excluded
- 1 -> Very bad
- 2 -> Poor
- 3 -> Medium
- 4 -> Good
- 5 -> Very good
- 6 -> Excellent
You can cancel one or more choices by selecting the value in the right
window and clicking the button << . Values are
returned to the left window.

Processing aids: metadata

The button

displays a window with the description of the soft criteria contained in the data layers.
The following window shows an metadata example for a soft criterion:

The metadata is stored in a separate file (.fzy), managed by the
command.
The management of these files is automatic. For example, the elimination of
metadata corresponding to a soft criterion if it is manually deleted from the
table of the feature class.
However, if you move layers to different directories or geodatabases, you will
need to move the .fzy file manually.
A text criterion will be indicated by a 999 type. Currently, the transformation
table is not stored in the metadata.

Available languages

A drop-down list allows you to select the language to use.

The available languages are:
• French (default)
• English
• Spanish
• Vietnamese

Even if the command is supposed to switch from one language to another
without any problem, depending on the version of Windows used, it is safer to
close and reopen the command after selecting another language from the
drop-down menu.
Versions of ArcGis
Commands can be used with ArcGis versions between 9.2 and 10.3. Downloading the command (Version 10.3.0.5)

dllcriteretexte

Manual use of fuzzy criteria text

Command installation

The tools are provided as a .dll file.
To install it you have to go through the ArcMap menu Customize ->
Customize mode.
The customization window opens:

On the Commands tab, click the Add from File button. Select the fuzzy_textV92_103ML.dll file that you have previously copied to a permanent directory of your local disk WITH the Text.mdb file delivered at the same time. If you have already installed the previous commands, replace the existing file with this one. This file contains the different versions of the languages used. It is not very elegant, but it allows the command to work without special adaptation with Xp, Vista, W7 and W8.
Click OK. The following message should appear to indicate that the installation was successful

Click OK. In the available Commands window you will be automatically positioned on the NASCA commands category and you will see the available tool: Text Criteria.
To be able to use it, click-drag on the command icon and drop it into an open ArcMap toolbar.

15 octobre 2018
19:11
La géomatique et la modélisation 3D une complémentarité qui donne naissance au GéoBIM.
sur Veille cartographie

Cet article La géomatique et la modélisation 3D une complémentarité qui donne naissance au GéoBIM. est apparu en premier sur Veille cartographique 2.0.

De nos jours, le domaine de l’aménagement urbain et du foncier sont étroitement liés aux données cartographiques. On retrouve également un lien particulier entre ces données cartographiques et la modélisation de maquettes numériques car de plus en plus de projets urbains demandent une expertise BIM durant les différentes phases de conception. Mais, dans quelle mesure […]

Cet article La géomatique et la modélisation 3D une complémentarité qui donne naissance au GéoBIM. est apparu en premier sur Veille cartographique 2.0.
19:05
Impact du changement climatique en France d’ici 2050
sur Veille cartographie

Cet article Impact du changement climatique en France d’ici 2050 est apparu en premier sur Veille cartographique 2.0.

La France a été touchée par d’importantes catastrophes naturelles durant ces trois dernières années. Elle a subi les crues de la Seine en juin 2016, une forte sécheresse en 2017, l’ouragan Irma en septembre 2017 et les crues de la Seine et de la Marne en janvier 2018. Ces phénomènes nous rappellent l’exposition du territoire […]

Cet article Impact du changement climatique en France d’ici 2050 est apparu en premier sur Veille cartographique 2.0.
19:01
MobiAnalyst le meilleur de la technologie pour l’analyse des PDE
sur Veille cartographie

Cet article MobiAnalyst le meilleur de la technologie pour l’analyse des PDE est apparu en premier sur Veille cartographique 2.0.

« PDE » qu’est-ce que c’est? Le « PDE« , c’est un plan de déplacement d’entreprises qu’on appelle aujourd’hui, le plan de mobilité « PDM« . Il s’agit d’une nouvelle démarche qui permet d’améliorer et d’optimiser les déplacements domicile-travail des salariés d’une structure (entreprise ou administration). Le « PDE » favorise l’usage des modes de transport alternatifs à la voiture individuelle, comme le […]

Cet article MobiAnalyst le meilleur de la technologie pour l’analyse des PDE est apparu en premier sur Veille cartographique 2.0.

10:03
Carte de France du renouvellement urbain
sur Chroniques Cartographiques

Bon, même si je n'alimente plus trop ce blog depuis cet été je vais quand même partager cette carte du CGET qui me semble tout à fait intéressante pour celles et ceux qui suivent de près l'avancée des politiques d'aménagement et d'urbanisme notamment...

2:53
GIS and Decision Support (6): Theoretical Fundamentals (Part 2)
sur Blog SIG & Territoires ---- Le blog SIG pour la gestion territoriale
This article is the direct continuation of the: GIS and decision support (5): Theoretical Fundamentals (Part 1)

Aggregation example.

We consider the aggregation of the criterion
« bathymetry » as it is shown in Figure 2, and another criterion, for
example, the substrate that is defined according to a particle size scale:

<

Fuzzy
representation of the substrate criterion with 5 degrees of satisfaction

We propose the user to evaluate three situations

1) How would you classify a site with a depth of 30 meters and a silt
bottom?

oVery good o Good o
Pretty good o Poor o Very bad

2) How would you classify a site with a depth of 17 meters and a
sandy bottom?

oVery good o Good o
Pretty good o Poor o Very bad

3) How would you classify a site with a depth of 17 meters and a silt
bottom?

oVery good o Good o
Pretty good o Poor o Very bad

The first question corresponds to C1 = E and C2 = A, that is to say that
it proposes a very bad value for the first criterion (30m is beyond the 25m)
and an excellent value for the second criterion.

The second question corresponds to C1 = C2 = C, ie it proposes two
average values for the two criteria.

The third question corresponds to C1 = C and C2 = A, ie it proposes a
mean value for the first criterion and an excellent value for the second one.

A user can answer for example:

1) very bad (the depth criterion seems to be crucial here),
2) pretty good (average depth and average bottom represent average site)

3) pretty good (for this user the depth criterion is more important,
despite the fact that the substrate is very good, having a moderate depth makes
the site a medium).

Therefore, we have R1 = E, R2 = C, R3 = 0, which corresponds to the
third line of the table of aggregation operations where we find as operation:
min ( u, v )

u is the value of the layer pixel “bathymetry [0, 1]”
v is the value of the pixel on the layer “substrate [0,1], that
is to say that the pixels have been classified with values between 0 and 1
according to the criteria defined in the figures 1 and 3.

The aggregation operation is, therefore, to keep for each pixel the
minimum value of u and v This corresponds in an
image processing software to the Overlaying function with creation of a
composite layer with the minimum values of the two layers.

Another user can answer, for example:
1. very bad
2. pretty
  good
3. good
For this user, the criteria are roughly equivalent starting from a
certain average threshold, which means that for the third question his
evaluation is halfway between the two partial criteria.

Therefore, R1 = I, R2 = C, R3 = B, corresponding
to the fourth line of the table of aggregation operations where there are two
possible actions:

or,

If one wishes to refine the calculation, a fourth question would be
necessary to decide the method of calculation. In most cases, one or the other
can be used indifferently because the results are very close together.

2: Criteria of uneven importance

Two criteria have the same importance if the aggregation function is
symmetrical, ie if the answer to the three evaluation questions is the same when
the order of the criteria is reversed.
For example, for the bathymetry and substrate criteria one can construct the
first question in two ways:

a) a totally incompatible bathymetry (E) and a completely compatible substrate
(A) if we take C1 = bathymetry and C2 = substrate, or

b) a completely incompatible substrate (E) and a completely compatible
bathymetry (A) if C1 = substrate and C2 = bathymetry.

If both criteria are equally important, the answer to this question will
be the same in both cases. This response highlights the subjective way of
aggregating the two criteria (conjunction or disjunction) or the underlying trade-off
mechanism that the decision maker uses.
On the other hand, if one of the two criteria is of greater importance than the
other, the symmetry will not be verified. For example, if the bathymetry is
more important for the decision-maker than the substrate, he may answer
mediocre (D) in the first case and good (B) in the second case. In this case,
the aggregate operation table is no longer valid.

The concept of the importance for a criterion relative to another has
been little understood until now. The meaning given to this word varies greatly
depending on the decision-maker or the situation.
Unlike the aggregation of criteria of equal importance, for which we can find
in the available literature the development of calculations, it will be
necessary to develop a method for dealing with the aggregation of criteria of
uneven importance.

Limitations of the problem.

One must not confuse the uneven importance with
the threshold of discrimination for a criterion.
By threshold of discrimination we mean the relation between the interval
corresponding to a criterion and the global domain of variation of the values.

For example, if the depths vary between 0 and 30 m, settting as a
criterion the fuzzy number (4, 10, 20, 26) is less selective than (11 , 12 ,
14, 15 ). It is observed that, generally, the more a goal is considered
important by a decision-maker, the more he will tend to define supports and
narrow nuclei and, on the contrary, the less important he judges a criterion,
the more he will tend to establish distant boundaries.
This is a way of conveying a certain idea of the criteria relevance, but it
remains in the realm of what we call equally important criteria.

Another common form of expressing the uneven importance of the criteria
is the weighting of objectives: a weight is assigned to each objective and this
weight is included in the aggregation operation.
This method has the disadvantage that it cannot be applied to anything else but
numbers, and that the evaluation, a priori, of the weights is problematic.

Statement of the problem

How to enrich the list of Questions SI, S2, S3 with the smallest number
of new questions to determine:

a) if the aggregation function is symmetrical or not, and therefore
whether the aggregation operation table of equal importance for the goals, can
be used;

b) if the function is not symmetrical, what is the relative weight of
each criterion C1 and C2?
Proposed solution.

We have S1 ( E, A), S2 (C, C), S3 (C, A). We propose to add S4 (A, E),
ie the symmetrical question to S1 including a proposition totally compatible
with criterion C1 and another totally incompatible with criterion C2.

All the responses forming a doublet S1, S4 (AA, BB, CC, DD, EE) refer to
the treatment of criteria of equal importance.

The doublets (A, E) and (E, A) correspond to a particular case where the
weight of a criterion is equal to 0, the aggregation is not necessary because
the result is equal to C1 in the case of ( A, E), or C2 in the case of (E, A).
For the other possible doublets it is necessary to determine which aggregation
operation can be used, before determining the weights to apply.

Among the aggregation operations, min, max and symmetric sums can only
be applied on symmetric criteria, and therefore they must be eliminated
automatically.

Of the average operations, only the arithmetic mean can give a result
other than 0 in the case where one of the criteria is 0 (√xy = 0 and 2xy / (x +
y ) = 0 if x = 0 or y = 0).

We therefore retain the arithmetic mean as an aggregation operation in
the form

(Px.x + Py.y) / ( Px + Py)

Px and Py being the respective weights of criteria C1 and C2.

In the case of doublets (D, B) and (B, D) it is easy to demonstrate that
the weights must be 3 and 1 for (D, B) and 1 and 3 for (BD).

There are no other doublets possible (DC , DA , …) if Px and Py are
constant. The other doublets assume that Px = f (x) and Py = f (y).
It can be concluded that the weighting of the goals is necessary only for a
number of classes greater than three, and cannot be applied for example to a
criterion that would be: good, average, bad. In this case we would always be in
the domain of a symmetric function.

In the case of n = 5, as is the case in Table 1, only the weighting
factor 3 – 1 is usable, if one holds to a reasoning close to the attitude of a
decision maker.

Download the theoretical bases

This document contains the two articles on the
theoretical bases of the processing of geographic information with fuzzy logic.

12 octobre 2018
12:18
Nouveau sur le site : les fiches essentielles en accès libre sous licence CC-BY-NC-ND.
sur Sigea : actualités

Nouveau sur le site : les fiches essentielles en accès libre sous licence CC-BY-NC-ND.

4:02

GIS and Decision Support (5): Theoretical Fundamentals (Part 1)

sur Blog SIG & Territoires ---- Le blog SIG pour la gestion territoriale

11 octobre 2018
17:54
The geographical Atlas: A transformed tool
sur Veille cartographie

Cet article The geographical Atlas: A transformed tool est apparu en premier sur Veille cartographique 2.0.

Who has never used an atlas to locate any place in the world or to study any geographical phenomenon? Basically, the word « Atlas » takes its origin from Greek mythology. Atlas was a giant, condemned to carry the sky on his shoulders eternally .It’s only in 1585 that the famous geographer Gérard Mercator attributed the name […]

Cet article The geographical Atlas: A transformed tool est apparu en premier sur Veille cartographique 2.0.
17:52
La première carte mondiale des causes de la déforestation
sur Veille cartographie

Cet article La première carte mondiale des causes de la déforestation est apparu en premier sur Veille cartographique 2.0.

En 2017, 29.7 millions d’hectares de forêts ont été détruits (FAO 2016). C’est un record. Pourtant, ce chiffre alarmiste est à nuancer car la déforestation n’est pas forcément permanente. Elle peut être temporaire et/ou réalisée dans une logique de développement durable. Pour mieux comprendre la déforestation dans le monde, le site Global Forest Watch a […]

Cet article La première carte mondiale des causes de la déforestation est apparu en premier sur Veille cartographique 2.0.
17:49
La géomatique dans la pop culture : une Story Map des Terres du Milieux
sur Veille cartographie

Cet article La géomatique dans la pop culture : une Story Map des Terres du Milieux est apparu en premier sur Veille cartographique 2.0.

La pop culture s’empare des outils du géomaticien. La géomatique et le Seigneur des Anneaux ? Si les prénoms Frodon, Gandalf ou Aragorn vous sont familiers, il est fort probable que vous ayez lu ou vu le Seigneur des Anneaux, la trilogie écrite par J.R. Tolkien au milieu du XXe siècle, puis adaptée au cinéma au […]

Cet article La géomatique dans la pop culture : une Story Map des Terres du Milieux est apparu en premier sur Veille cartographique 2.0.

3:56
Model Builder: Migrating to ArcGis Pro
sur Blog SIG & Territoires ---- Le blog SIG pour la gestion territoriale
The ArcGIS Pro ModelBuilder is very similar to ModelBuilder in the other
ArcGIS Desktop applications. The model diagram view is similar, and you build
the models by adding data and geoprocessing tools by connecting them to shape
processes. In ArcGIS Pro, you can view, edit, and run models that you have
built in previous versions of ArcGIS Desktop.

Despite these similarities, there are some differences. Knowing these
differences will facilitate your migration to ModelBuilder in ArcGIS Pro.

Let’s see some important points.

Versions compatibility

Firstly, as with any application, let’s look at the compatibility
aspects among different versions. ArcGis Pro Model Builder should be considered
as the latest version of Model Builder. Respecting an intangible rule, we will
have an Ascending Compatibility. That is, you can run existing models
made with Model Builder 10.3, 10.2, 10.1 … in ArcGis Pro, but you will not be
able to run a model made or saved with ArcGis Pro in other Desktop
applications. .

To use an ArcGis Pro model in another
application, DO NOT USE THE SAVE BUTTON, or SAVE AS, IN THE RIBBON.
In the geoprocessor window, right-click the toolbox where you want to
save the model, and select Save As, and select the version where you
want to have the model:

Elements connection

The selection, movement, and the interconnection of elements is always
done with the same tool, unlike other Model Builder versions where there are
two separate tools.
- To select an item, move the
  cursor over the item and click.
- To move an item, select it, click
  and move with the cursor.
To connect one element to another, the element
must not be selected, move the cursor over the element (the cursor takes the
form of a hand), click the item and move to the item to connect. Release the mouse on the latter; a window appears to
define the correspondence of the attached element with the various
possibilities of the tool.

What is not present in ArcGis Pro Model Builder

The Add to map (Add to display) no longer exists. In order for
the model output to be loaded in the map window you must define the output
layer as the model parameter. In this case, it is automatically added to
the map.

Intermediate and Managed Data Options no longer exist. According
to the mode of execution:
-If you run the model from the model window, all intermediate layers are
preserved,
-If you run the model from the geoprocessor window, all intermediate data is
automatically erased.

Lists and sets no longer exist. You must replace them with
iterators.

What you have to restring

If your models contain the tool “Calculate Field”, do not
forget that the VB syntax no longer exists in ArcGis Pro. It is necessary to
modify the expressions to convert them in Python. Then save the modified model.
10 octobre 2018
4:01
GIS and decision support (8): aggregation of uneven relevance criteria
sur Blog SIG & Territoires ---- Le blog SIG pour la gestion territoriale
We have discussed how to aggregate two or more criteria as part of a
geographical objects ranking ( GIS and decision support (4): a tool for aggregating fuzzy criteria
with ArcMap
). The method employee requires the criteria be perceived by the decision maker
as being of equal relevance. In this article we will discuss the theoretical
bases to meet the uneven relevance criteria.

To determine the aggregation method to be used across two criteria, we
propose to the user to evaluate three situations:
- The first question (S1) proposes a very poor value for the first criterion and an
  excellent value for the second criterion.
- The second question (S2) proposes two average
  values for both criteria.
- The third question (S3) proposes an average value for the first criterion and an excellent value for the second .
The three replies (triplets) are, then, used as key input for a table of
aggregation methods including 50 possible replies (triplets).

One of the constraints of this method is that both criteria have equal
relevance, ie that the answers to the three questions are the same whichever
the criteria order. This is called Replies “symmetry”.

Two criteria have the same importance if the aggregation function is symmetrical,
i.e. if the answer to the three assessment questions is the same if we reverse
the order of the criteria.
For example, in the case of choosing a car, the consideration of the criteria
« colour and price”, we can build the first question in two different ways:
- a) a totally incompatible colour (E) and a fully compatible price (A) if we consider C1 = colour and C2 = price, or so
- (b) a completely incompatible price (E) and a completely compatible colour(A) if we consider C1 = price and C2 = colour .
If both criteria have the same relevance, the answer to this question
will be the same in both cases . Through this reply, the subjective way of
aggregating the two criteria ( conjunction or disjunction) or the underlying compromise
mechanism that the decision maker uses, will be considered.
By cons, if one of the two criteria is more relevant than the other, the
symmetry is not verified. In our example it would not be unusual to get
« good » as reply, if the price is our concern, and not the colour, and
“poor” if the colour satisfies us but not the price.
In this scenario, the aggregation operations table is no longer valid.
The concept of relevance for a criterion in relation to another has not been,
yet, solved. The meaning we give to this word is very variable according to the
decision makers or the situations.
Unlike equal relevance aggregation criteria, for which we can find the
development of the calculations in the current literature, a method to treat in
the case of uneven relevance criteria aggregation has to be developed.

Problem statement

How to enhance the list of Questions SI, S2, S3 with the lowest number
of new questions to determine:
1. if
  the function aggregation is symmetrical or not, and therefore if we can use the
  aggregation operations table of equal relevance goals;
2. if the
  function is not symmetrical , what is the weight relative of each criterion C1
  and C2?
Suggested solution.

We have S1 (E, A), S2 (C, C), S3 (C, A). We suggest to add S4 (A, E),
that is to say the symmetrical question to S1 comprising a proposal fully
compatible with criterion C1 and another totally incompatible with criterion
C2.

All responses forming a doublet S1, S4 (AA, BB, CC, DD, EE) refers to equal
relevance criteria treatment.

The doublets (A, E) and (E, A) correspond to a particular case where the
weight of a criterion is equal to 0, the aggregation is not necessary because
the result is equal to C1 in the case of (A, E), or C2 in the case of (E, A).
For the other possible doublets it is necessary to determine what aggregation
operation can be used, before determining the weights to be applied.

Among the aggregation operations, min, max and the symmetrical sums, can
apply only on symmetrical criteria, and therefore they have to be eliminated ex
officio .

Among the average operations, only the arithmetic average can give a
result different from 0 in the case when one of the criteria is 0 (√ xy = 0 and
2xy / ( x + y ) = 0 if x = 0 or y = 0).

Therefore we will withhold the arithmetic average as aggregation operation
as follows

( Px.x + Py.y ) / ( Px + Py )

Px and Py being the respective weights for C1 and C2 criteria.

In the case of doublets (D, B) and (B, D) it is easy to demonstrate that
the weights have to be 3 and 1 for (D, B) and 1 and 3 for (B, D).

There are no other possible doublets (DC , DA , …) if Px and Py are
constant. The other doublets assume that Px = f (x) and Py = f (y).

We can conclude that the weighting of objectives is, only, necessary when
the number of classes is greater than three, and cannot apply, for example, to
a criterion that would be : good, average , poor . In this case it would always
be within the field of a symmetrical function .

In the case of n = 5, only the weighting factor 3-1 is usable in
order to keep on within the range of a human decision maker.

Practical solution

There are 25 possible combinations answers to question S4, S1
symmetrical. We have divided them in 5 groups :
- Replies confirming the equal relevance of both criteria: five combinations, the doublets AA, BB, CC, DD and EE. The aggregation formula is sought in the table of 50 triplets ignoring the S4 reply.
- Replies demonstrating the lack of consideration of a whole criterion: two combinations, the doublets AE and EA. The result of the
  aggregation is directly the value of the criterion taken in account, ignoring the value of the other criterion.
- The replies where the difference between S1 and S4 is 0,5 and which imply a different weight from the two criteria ( weight 1 and 3); six combinations , doublets AC, BD, CA, CE, DB and EC. We use the weights of 1 and 3 for the input criteria and the arithmetic average.
- Answers approaching an equal relevance criteria, but dubious. The difference between the answers is 0.25 : six combinations, the doublets AB, BA, BC, CB, DC and CD. The aggregation formula is sought in the table of 50 triples ignoring the S4 reply, then we shade the 0, 25 result obtained for the most relevant criterion.
- The replies that come close to not taking into account one of the two criteria. The gap between the two responses is 0 , 75 : six combinations , the doublets AD, BE, ED, DA, DE and EB. The result of the
  aggregation will be the criterion considered as relevant, shadowed by 0, 25 for the less important criterion.
The following table details the 25 combinations
and the aggregation formulas used.

In the next article we will discuss an ArcMap command that allows performing these uneven relevance aggregation criteria.

09 octobre 2018
17:30
Une cartographie des projets liée à la directive de Nature en Ville
sur Veille cartographie

Cet article Une cartographie des projets liée à la directive de Nature en Ville est apparu en premier sur Veille cartographique 2.0.

Le ministère de l’Égalité des territoires et du Logement et le ministère de l’Écologie, du Développement durable et des Transports ont mis en place le plan « Restaurer et valoriser la nature en ville » le 9 novembre 2010. Il répond à l’engagement 76 du Grenelle Environnement de « restaurer la nature en ville et […]

Cet article Une cartographie des projets liée à la directive de Nature en Ville est apparu en premier sur Veille cartographique 2.0.

4:31
The Geoserver Explorer plugin for QGis ( 2): limitations
sur Blog SIG & Territoires ---- Le blog SIG pour la gestion territoriale

Continuing the following article: The Geoserver
Explorer plugin QGis (1) installation and configuration, we will discuss
the
limitations of the plugin.

Limitations of the plugin

Here is a list
of limitations and problems likely
to come up.

Limitations related to the SRC.
GeoServer
can
experience
problems when a custom SRC system
is
being used by QGIS. The SRC definition that works
correctly
when
rendering the QGIS layer, may not work when importing the layer
to
GeoServer
. Usually this results in a layer
that is published but that does not have a SRC set
and it is not activated. You can correct
it
manually
by
selecting
the layer in the Explorer tree
and
amending
its CRS.

Note that the layers are imported
by
using
the SRC defined in the original data source
(i.e.,
the file prj if you
use
a
shapefile).
Defining
a different SRC by using the option Set Layer CRS
in
the QGIS table of contents will not have any effect when
importing the layer to GeoServer , except
if
you
save
the layer with this SRC so that the SRC definition is stored
with the data layer.

Limitations related to the
layers names.
GeoServer
Explorer uses the GeoServer REST API to get the list of layers in the catalogue.
The REST API describes the layers without working space,
which means that if you have
two
layers with the same name and in different workspaces
(for example , ws1: macouche and ws2: macouche ),
they will be displayed just
as one ( macouche in this
case
).

When this is the case, the
situation is ambiguous and GeoServer
Explorer cannot differentiate the layers depicting the same name but
belonging
to different workspaces. The layer, as described by the
REST API, is added to the explorer tree,
but it represents only one of several layers that share the
same name. To denote this special situation, the layer is
displayed
with a warning icon, and a warning message appears
in
the layer description.

Style limitations

Another important
limitation is due to the different
versions of the SLD supported by QGIS and GeoServer .
The
GeoServer explorer
allows to edit the style of a
layer
GeoServer
directly
from the QGIS interface. It can
convert
a defined QGIS style into a downloaded from the GeoServer
catalogue and use GeoServer styles for the QGIS layers. This
two-way conversion is, however,
limited.
This is, mainly, due
to the different versions of SLD supported by QGIS and GeoServer , as well as
to
some
GeoServer and QGIS limitations. SLD is in use
as
a common format by GeoServer Explorer to describe the styles in the QGIS and
GeoServer layers, but some incompatibilities
exist. To increase the compatibility between them, specific
routines have been added
to the explorer GeoServer . However,
in some case, a defined style
in
QGIS may not be compatible with the elements supported
by GeoServer explorer , and the publication of a layer
will be executed with a modified style , or even
by
using
a default style.

This problem exists even
when
using the latest version of GeoServer, but older versions of GeoServer
can
present
more incompatibilities and do not validate
a
great
part
of the SLD produced by the GeoServer explorer.

As a general rule, the basic style
for vector layers should operate
without problems in both ways,
but a more complex symbology
will
be
partially
or
completely
inconsistent, leading to differences between, for example, the style you
set
in
QGIS and the style that the GeoServer layer will depict. Raster
layers have a more limited support.

Incidentally, I had to set a style for a QGis project and
load it into Geoserver with the plugin.
The style was correct for GeoServer (what
can be double checked with the option Layers Preview). But when
we tried to reload the layer into QGis, the style was not accepted
by QGis…

Here is a list
of acknowledged limitations for the LTC management:

Raster layers

The raster style is taken in
charge only from QGIS towards GeoServer . It
means
that
a raster style can be created
by
using
the
QGIS user interface and downloaded towards GeoServer,
but a raster style from GeoServer cannot be used
for a QGIS layer . When a GeoServer
layer
is added to an ongoing QGIS project with the assistance of GeoServer Explorer,
its symbology will be used only
if it is
a
vector
layer, but will be ignored in the case of a
raster
layer and the default QGIS style will be used .
Only
pseudo colour Single Band Gray and
Singleband are used.
In
this
latter
case,
the correct colour interpolation is not supported, but the
modes Linear and Discrete are employed.

The use of the plugin is a
very interesting alternative in relation to the classic
loading process of a Geoserver style .

Vector layers

When converting a GeoServer style into
a
QGIS style, the style is always defined
as
a style based on rules. This means
that even if the style is created using a different
type, such as graduated when it is downloaded into
a GeoServer catalogue and re-modified from QGIS it
will
not appear as a Graduate style. This is due to the way QGIS includes
the LTC styles, by, always, interpreting always as
a
Rule-based
type symbology.
Basic
labelling is employed, but all
labels (labels) will not be exported QGIS to LTC and downloaded GeoServer.
In
particular,
the advanced labelling is dependent on the
data is not used.
Importing
a
points
layer with a QGIS SVG style towards Geoserver generates
a
WMS
layer that respects this SVG symbol.
The same is not supported for the time being if the layer is
reimported
as
a WFS layer .

In the next article we will discuss how to use the Geoserver
Explorer plugin .

08 octobre 2018
19:39
HiQuake : Mapping human-induced earthquakes
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What provokes earthquakes? The Earth is made of four layers, on of which is the lithosphere, which is made of tectonic plates that are continuously shifting. When those plates happen to clash with one another at a fault line, it leads to a sudden and relatively strong release of energy and the cracking of underground […]

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19:37
Comment un Système d’Information Géographique contribue t-il à la prévention d’un phénomène : L’exemple du virus Ebola au Sénégal en 2014
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Carte 1 : Géographie de l’épidémie d’Ebola en Afrique de l’Ouest Introduction Découvert en 1976 dans les localités de Yambuku et Nzara, situées respectivement au Nord de la République démocratique du Congo (RDC) et du Sud Soudan, le virus Ebola avait ciblé cinq pays de l’Afrique centrale (RDC, Congo, Gabon) et orientale (Soudan, Ouganda). En […]

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3:14
The Geoserver Explorer plugin for QGis (3): instructions for use
sur Blog SIG & Territoires ---- Le blog SIG pour la gestion territoriale
This is the continuation of the following articles, The Geoserver Explorer plugin for QGis (1):
installation and configuration , and The Geoserver Explorer plugin for QGis (2): limitations
, here we will discuss the detailed user instructions for the plugin.

GeoServer Explorer: Available commands and actions

Contextual menu actions

Below you will find information about the available commands based on
the type of element you click in GeoServer Explorer, as well as an explanation for
their use. GeoServer catalog element.
- Clean (remove unused items). Cleans all the catalogue’s styles that are not used
  by any layer, and all storage data that is not published across a layer.
- Remove. Deletes the catalogue from the connected list. It is, also, removed from the list that is kept
  between sessions, so it will not appear again the next time QGIS is started and
  the GeoServer Explorer is executed.
Publish layers to this catalogue : Displays the Publish Layer dialog box

Check the box for each layer you want to publish among those currently
in your QGIS project. Then select the workspace in which each layer is to be
imported and the layer name in the GeoServer catalog. By default, the name of
the layer in the QGIs project is used, but this name may not be a valid XML
name, in which case it will appear in red and you will need to enter a valid
name. Publish project to this catalogue. Publishes all layers of the project. The publishing operation is configured through the
following dialog box:

All the layers will be published in the selected workspace.

If there are groups in the QGIS project, they will also be created. Groups
are not replaced when a project is published. If a group with the same name
exists in the catalogue, a warning message will be displayed and the group will
not be downloaded.

If you want to create a group containing all published layers, enter its
name in the Name text box of the global group. Otherwise, leave
it blank and the global group will not be created.

Workspaces item
- New workspace…. Adds a new workspace.
- Clean (remove unused warehouses). Removes all data stored that are not published by
  any layer in the catalogue.
Layers element
- Add layer to QGIS project. Similarly to the Add to QGIS project command for feature or cover types, but it also uses style information in the
  case of vector layers. The style is uploaded as an SLD
  file and configured for the corresponding QGIS layer. In the case of raster layers, SLD styles are not
  supported and for this reason the layer will use a default style.
- Delete .Delete the catalogue layer. The associated style will be removed if it is not
  used by any other layer and if the corresponding configuration parameter is
  set. Another configuration parameter
  can be set to, automatically, delete the underlying data stored when a layer is
  deleted. If a GWC layer associated with
  this layer exists, it will also be deleted.
Add style to layer. Adds
a new style to the layer in the list of available layers in the catalogue. The style is selected in the dialog box below:

This is another and easier way to export the QGis style to SLD and then upload the SLD to
GeoServer

Element style New style from QGIS layer. Creates a new style in the GeoServer catalogue using
the style of a QGIS layer. The QGIS layer to use and the name of the style
to be created in the GeoServer catalogue are specified in the following dialog
box:
- Clean (remove unused styles). Removes all styles that are not used by any layer.
- Consolidate styles Searches for layers in the catalogue whose styles
  match the same symbology. This can occur when downloading
  layers with the same style, since each downloaded layer will have its own layer
  with the same name as the layer, and all will share the same SLD code. This command looks for styles that represent the
  same symbology and, in the layers that use them, replaces the corresponding
  styles with the first style in the list of redundant styles. Once the command is executed, only one style of
  those that are identical will be used, while the others will not be used by any
  layer. These unused styles are not
  deleted, but the Clean command (remove unused styles) will be removed from the catalogue.
Style element.
- Edit…. Opens the QGIS symbology editor
  to change the style of the layer. Create your symbology and accept the dialog box to be closed. This will cause the style update. Note that the QGIS interface for defining a
  symbology is used to edit a GeoServer style, but since the layer that uses the
  style is not available, some restrictions exist:
  - If the
    style element is in a layer element, the explorer will get the attribute names
    of the layer, so you can use them to define your symbology rules. However, the min and max values of these
    attributes in the layer are not available. You will not be able to use them to define ranges or categories.
  - If the
    style element is not in the layer element, the explorer will try to find out if
    the style is used by any other layer, and will use that layer in case it can
    find it. If multiple layers use a style,
    the first one will be used. If no
    layer is found (no layer uses this style), the style will be open for editing,
    but no field name will be available. You will change the style as if it matched a QGIS layer without
    attributes.
  - The labelling
    is not supported in this case when extracting the SLD style to edit. This means that you can add a label to the style
    you set and that it will be correctly downloaded into the catalogue, but if the
    style you are editing has a certain type of labelling, it will not appear in
    the style editor. QGIS, which will always have disabled tagging.
  - Editing a
    style using the QGIS symbology editor is only supported for vector styles. If you try to edit a raster style in this way, Explorer will display a warning message that
    these styles cannot be edited.
Edit SLD… By clicking on it, you can directly edit the contents
of the corresponding SLD, using a dialog box with an XML editor, such as the
one shown below:

By clicking OK the corresponding SLD body in the catalogue will be
updated, with the current text of the editor. No validation is performed on the
client side, but if the publisher’s content is not a valid SLD, GeoServer will
refuse to update it. The corresponding error message returned by GeoServer will
be displayed in the QGIS message bar.

If the style is in a layer element, the following additional options are
available:
- Set as default style. Sets the style as the default style for the layer.
- Add style to layer… A style can be selected in the
  dialog box that will be displayed, and it will be added as an additional style
  for the layer.
- Remove style from layer. Removes a style from the list of layer replacement
  styles. Not enabled for the default style
  of the layer.
items setting

When you click it, the configurable parameters in the description panel
will be shown. You can edit them and press the Save button to download the
changes to the corresponding catalogue and update it.

GeoWebCache layers element

New GWC layer… Adds a new GWC layer from an
existing layer to the GeoServer catalogue. The
properties of the cache layer are defined in a dialog box like the one shown
below:

GeoWebCache layer element
- Delete. Deletes the cache layer
- Edit. Modifies the properties of the GWC layer by opening
  the same dialog box used to define them when creating the layer.
Seed … Starts
a building operation for the cache layer. The
operation is defined via the following dialog:

The zone to be generated must be entered in the field located in the
lower part of the dialog box, with a string of 4 values separated by commas
(xmin, xmax, ymin, ymax). If no value is entered, the total extent of the layer
to be generated is used.

Another way to define the region to be generated is to click the Set
button on the canvas on the right side of the dialog box. This
will cause the dialog box to disappear temporarily and display the QGIS map. Just
click and drag to set the desired generation region, and the dialog box will
appear again, containing the coordinates of the area.
- Empty. Deletes all cache data for a given layer.
When a generation operation is started, the description box
corresponding to the GWC layer being generated will show the current state of
the operation.

Since these operations can be very long, depending on the zoom levels
selected and the area covered by the layer, the progress is not displayed using
a progress bar.

Instead, you can use QGIS as usual while the operation is running in the
background, and to update the status just click the update link in the
description box to get the current number of tiles processed. If you want to
stop the building operation, just click the kill link .

05 octobre 2018
18:15
L’utilisation du Deep Learning dans la lutte contre l’obésité
sur Veille cartographie

Cet article L’utilisation du Deep Learning dans la lutte contre l’obésité est apparu en premier sur Veille cartographique 2.0.

Tout est plus gros en Amérique : les voitures, les maisons, les entreprises… et la population1. Si l’obésité semble s’endiguer chez les populations les plus jeunes, elle reste un problème majeur aux États-Unis : 40% de la population ayant plus de 20 ans était obèse en 2016, soit une augmentation de 6% depuis 20072 . Des données […]

Cet article L’utilisation du Deep Learning dans la lutte contre l’obésité est apparu en premier sur Veille cartographique 2.0.
18:10
Art pictural et ère numérique
sur Veille cartographie

Cet article Art pictural et ère numérique est apparu en premier sur Veille cartographique 2.0.

On parle de touche. Celle du peintre, tout d’abord. Une manière de barbouiller qui caractérise le style du maître, ses œuvres. David la préférait fine, discrète. Monet, grossière et vive. Question d’école. Puis, on a les touches. Celle d’un clavier d’ordinateur. Celle de l’informaticien, que ce dernier martèle afin de manipuler des données. Un mot […]

Cet article Art pictural et ère numérique est apparu en premier sur Veille cartographique 2.0.
18:05
InTerSanté : un nouvel outil de Cartographie sur la santé des populations en Île de France
sur Veille cartographie

Cet article InTerSanté : un nouvel outil de Cartographie sur la santé des populations en Île de France est apparu en premier sur Veille cartographique 2.0.

L’ORS (Organisation Régionale de la Santé) à récemment mis à disposition des acteurs du système de santé (collectivités locales, élus, organisme de santé et citoyens), un nouvel instrument d’aide à l’analyse de donnée, l’InTerSanté.
InTerSanté est un outil de visualisation d’Indicateurs territorialisés de santé en Île-de-France

Cet article InTerSanté : un nouvel outil de Cartographie sur la santé des populations en Île de France est apparu en premier sur Veille cartographique 2.0.
18:00
Le LiDAR : Incroyable découverte d’une cité maya
sur Veille cartographie

Cet article Le LiDAR : Incroyable découverte d’une cité maya est apparu en premier sur Veille cartographique 2.0.

Grace au LIDAR le MNT devient de plus en plus populaire dans de nombreuses applications, telles que l’inventaire forestier, la cartographie des plaines inondables, l’hydrologie, la géomorphologie, l’urbanisme, l’architecture, l’écologie du paysage, le génie côtier, l’archéologie, l’évaluation des études et les calculs volumétriques. Qu’est-ce qu’un LiDAR ? Le terme LiDAR correspond à l’acronyme anglais Light Detection And Ranging. […]

Cet article Le LiDAR : Incroyable découverte d’une cité maya est apparu en premier sur Veille cartographique 2.0.
17:25
Geovelo, le Waze des deux roues
sur Veille cartographie

Cet article Geovelo, le Waze des deux roues est apparu en premier sur Veille cartographique 2.0.

Nous le savons tous que l’usage du vélo constitue une des solutions aux problèmes de pollution et de sédentarisation des habitants dans les villes. Geovelo, une application GPS qui guide les cyclistes L’application GeoVelo est un GPS spécialement conçu pour les cyclistes, qui les dirige vers des pistes cyclables et des rues peu passantes. Elle […]

Cet article Geovelo, le Waze des deux roues est apparu en premier sur Veille cartographique 2.0.

3:10
How to create a portable version with QGis 2.8
sur Blog SIG & Territoires ---- Le blog SIG pour la gestion territoriale
What is a portable application?

A portable application (or portable software) is a computer program
characterized by its portability, ie its ability to operate in different
execution environments. It does not require pre-installation, does not depend
on external components, and does not create a lasting modification of the
system by its operation.
These applications are useful for working on a computer whose security policy
does not allow installations, or to avoid making lasting changes to a
temporarily used computer. Therefore, we can make use of the application from a
removable storage like a USB key.

We will discuss how to create a portable version with QGis 2.8, either
to be able to use it without installation, or to distribute applications using
QGis.

If you simply want to download a portable version, you can do it
directly from our NASCA site:

for the 32-bit version with this link: [www.nasca.ovh]

for a 64-bit version, with this one: [www.nasca.ovh]

Firstly, let us give back to Caesar what is Caesar’s: we base ourselves upon
the work by Arpa Piemonte in Italy. You can check their work
for previous versions of QGis at this address.

We will cover two topics:
– how to create a blank version of QGis 2.8 portable, executable from a USB
stick or an external drive.
– how to add plugins to this version

How to create a QGis 2.8 blank portable version

You must, of course, have QGis installed on the computer where you will
create the portable version.
On your removable unit:
- create a directory to install
  qgis. You can name it as you please. Here we will use QGis_2_8_x64
We select x64 because the PC on which we will create the portable
version is a 64bits PC. If you are using a 32-bit PC, you will select x32. This
is important because a 32-bit portable version can be run on either a 32-bit or
64-bit PC. On the other hand, a 64-bit portable version can only be executed on
a 64-bit PC.
- In this directory create a
  sub-directory that you will name qgis.
Here, respecting the name is important because it will be used in the path
instructions to run the portable version.
- Copy the contents of your QGis
  2.8 installation, ie all the files and directories located in x: / Program
  Files (x86) / QGis Wien or x: / Programs / QGis Wien, in the QGis directory of
  your removable drive
- Create a text file in the
  QGis_2_8_x64 directory called qgis.bat.
Therefore, you will have, in the QGis_2_8_x64 directory, the QGis
directory and the qgis.bat file.

[Update
of the article of 17-10-2015]

Identify the file name used by your QGis version for launching:

This file is located in the QGis_2_8_x64 / bin or QGis_2_8_x32 / bin
directory and is named qgis.bat or qgis-ltr.bat. Do not confuse the qgis.bat
you created in the previous step and this one.
- In the qgis.bat file, copy the
  following lines:
- If the file found is QGis_2_8_x64
  / bin / qgis.bat
@ECHO OFF
SET DRV_LTR =% ~ dp0
SET OSGEO4W_ROOT =% DRV_LTR% qgis
path% PATH%;% OSGEO4W_ROOT% \ apps \ qgis \ bin;% OSGEO4W_ROOT% \ apps;%
OSGEO4W_ROOT% \ bin
IF « 1% »==«
»(Start« Quantum GIS /%
OSGEO4W_ROOT% \ bin \ qgis.bat -configpath% DRV_LTR% qgisconfig) ELSE
(start ‘ Quantum GIS /% OSGEO4W_ROOT%
\ bin \ qgis.bat -configpath% DRV_LTR% qgisconfig -project% 1)
- If the file found is QGis_2_8_x64
  / bin / qgis-ltr.bat
@ECHO OFF
SET DRV_LTR =% ~ dp0
SET OSGEO4W_ROOT =% DRV_LTR% qgis
path% PATH%;% OSGEO4W_ROOT% \ apps \ qgis \ bin;% OSGEO4W_ROOT% \ apps;%
OSGEO4W_ROOT% \ bin
IF « 1% »==«
»(Start« Quantum GIS /%
OSGEO4W_ROOT% \ bin \ qgis-ltr.bat -configpath% DRV_LTR% qgisconfig)
ELSE (start ‘ Quantum GIS / %
OSGEO4W_ROOT% \ bin \ qgis-ltr .bat -configpath% DRV_LTR%
qgisconfig-project% 1)

[End of article
of 17-10-2015 update]
- Once saved, run the qgis.bat file by double-clicking it
This will create the necessary variables (lines
2 and 3), add the path variable (line 4) and launch QGis (line 5).
You will get the following error message:
- Click close.
You will have a warning message:
- Click OK
- Close the command window
- Restart QGis by double-clicking qgis.bat
You will need to have the opening, without any error message, of QGis. You
will also need to have a new directory under QGis_2_8_x64 named qgisconfig.

Your removable unit now contains the QGis 2.8 portable version, fully
operational.

How to add plugins to your portable version

You can still launch the portable version on your machine and manually
add the plugins, just as you do with any non-portable version.

You can also save time by transferring the plugins installed in your
basic version to the portable version.
For it:
- Copy the contents of C: \ Users \ username \ .qgis2 \
  python \ plugins to the qgisconfig \ python \ plugins
  directory under QGis_2_8_x64 (or x32) on your removable unit.
Warning !: this installs the plugins, ie when you open the
plugin manager from QGis, these plugins will appear as installed. However, they
will not be activated by default. You will need to open the plugin manager and
check the boxes corresponding to the plugins you want to see activated when
launching your portable version.

How to launch the portable version of QGis with a
default project

The last line of the qgis.bat file is used to launch, by default, QGis
with a blank project. But you can open an existing project automatically,
adding the project name as a parameter in the qgis.bat file .

You can, but it’s a bit heavy, open a command window, navigate to the QGis_2_8_x64
directory and type in the command line

qgis.bat project_name.qgs

But it’s easier to create, next to the qgis.bat file, a new .bat file
that you can name at your convenience and that will contain a single line, the
previous command line.

Double-clicking on this .bat file you will execute qgis.bat
with the name of the selected project as the parameter.

04 octobre 2018
20:12
QFWE: la base de données mondiale des projets d’éoliennes flottantes
sur Veille cartographie

Cet article QFWE: la base de données mondiale des projets d’éoliennes flottantes est apparu en premier sur Veille cartographique 2.0.

Le secteur de l’éolien flottant se développe dans le monde entier Le 18 septembre dernier, la France a rendu opérationnelle sa première éolienne flottante (voir Figure 1), baptisée Floatgen. Elle se situe à 22 km au large du Croisic (Loire-Atantique). L’éolienne est située sur le site d’essais dédié aux énergies renouvelables SEM-REV de l’école d’ingénieur […]

Cet article QFWE: la base de données mondiale des projets d’éoliennes flottantes est apparu en premier sur Veille cartographique 2.0.
18:18
Intel wants to map the world roads
sur Veille cartographie

Cet article Intel wants to map the world roads est apparu en premier sur Veille cartographique 2.0.

Intel, which is well known for their processors, has bought in 2016 Mobileye for 15,3 billion dollars, a company which produces ADAS (Advanced Driver Assistance Systems). They now want to take part in the world of autonomous cars and dominate it. But how they intend to do that ? At last CES (Consumer Electronics Show), […]

Cet article Intel wants to map the world roads est apparu en premier sur Veille cartographique 2.0.

4:26
Input Data in the QGis 2.8 Graphical Modeller
sur Blog SIG & Territoires ---- Le blog SIG pour la gestion territoriale

Chapter 2: Adding
Input Data to the Graphic Modeller

To start a model, you will need to define the input data.
The graphical modeller supports the following input types:

•
Boolean
•
Extended
•
File
•
Number
•
Raster layer
•
String
•
Table
•
Table field
•
Vector layer
To
add an entry, double-click the appropriate category from the Entries
tab or drag the entry onto the Graphic Modeller window.

The Parameter
Definition dialog box opens.

Give a name to the parameter and specify any other detail, such as the type of geometry in our example. The settings in this window change depending on which entry is chosen.

When the input setting is defined and added to the
model, it is essentially a conceptual parameter. It will
not actually be connected to a data layer until you are ready to run the model.

For this example, we added a vector layer that we called « Installations ».
We have determined the
type of geometry of the data (points) and
we have classified it as mandatory.

All the objects in the graphic Modeller window can be selected with a mouse click and moved to be re-positioned in the window. By clicking on the pencil icon you will open the Parameter Definition dialog box and you can make the desired changes. By clicking on the Delete symbol (X) you delete the input of the model. For our example, we will add a second polygon type vector layer including the oyster plots. Finally, we will add a number entry. This will allow us to set the buffer distance value as an input that can be modified when the model is executed.

It will be called Distance and we will set a default value of 500, since 500 meters is the distance we want to use initially.
In the graphical modeller, the distances are expressed in reference coordinate system units.
The following screenshot shows the model with the entries: two vector layers and one number input.

Before continuing in our example, let’s look at the
other possible types of input in the graphical modeller: Boolean

The parameter can take only two values:
true or false. You define the name to use in
the model and whether the default value is true (checked).

Extended

The adding an Extended
type entry (Extent)
has no parameters other than the desired name. This
entry will be added to the model window by filling in the given name with « (xmin,
xmax, ymin, ymax) ».
You
can then define a frame for the desired extent of the model result, either by
entering the four coordinates of the corners of the extended, or by choosing an
option from the drop-down menu available by default. In
the example we simply entered “Extended” as the name of the entry.

Example of
How an Expanded Entry Appears When Running the Model

File

You can define a file
type entry by
determining whether it is a file or a directory.

Raster layer

You will be able to define if
the raster layer is essential or optional for the execution of the model.

String of
characters

You can enter a default value
for a variable of String type which will be used when
running the model.

Table

You can specify as input a
non-spatial table, defining whether it is required for the model execution.

Table field

To indicate as input a table field, spatial
or not, we must first include a vector type input layer or non-spatial table.
The
window for defining the parameters of the table field will offer you a list of available
tables in the model.

In this example, the first two tables are the vector
layers tables already entered in the model and the third one is a non-spatial
table, also entered in the model.

03 octobre 2018
18:00
La cartografía ayuda a la inserción de los VMU en Madrid
sur Veille cartographie

Cet article La cartografía ayuda a la inserción de los VMU en Madrid est apparu en premier sur Veille cartographique 2.0.

Résumé Le 26 juillet 2018 la mairie de Madrid a approuvée une nouvelle ordonnance sur la mobilité durable en ville. Cette ordonnance reconnait pour la première fois une nouvelle forme de déplacement, qui est apparu ces dernières années et pris de l’ampleur ces derniers mois, les “véhicules de mobilités urbaines”(VMU). Ce sont donc les Hoverboards, […]

Cet article La cartografía ayuda a la inserción de los VMU en Madrid est apparu en premier sur Veille cartographique 2.0.
18:00
L’enjeu des data en libre accès: « data.gouv.fr »
sur Veille cartographie

Cet article L’enjeu des data en libre accès: « data.gouv.fr » est apparu en premier sur Veille cartographique 2.0.

Le 5 décembre 2011, à la suite de politique d’ouverture des données publiques, François Fillon alors premier ministre annonce l’ouverture de « data.gouv.fr ». L’avancée avec cette plateforme est la mise en place d’une plus grande transparence de l’action publique. Elle permet à toutes les collectivités de mettre leur donnée sur ce site, qui est ensuite en […]

Cet article L’enjeu des data en libre accès: « data.gouv.fr » est apparu en premier sur Veille cartographique 2.0.
18:00
Les SIG dans les écoles
sur Veille cartographie

Cet article Les SIG dans les écoles est apparu en premier sur Veille cartographique 2.0.

Pourriez-vous imaginer un SIG dans les écoles primaires ? Et bien c’est la réalité. Depuis cette année ESRI France lancé un programme destiné aux établissements du primaire et du secondaire français. Ils s’engagent à fournir des logiciels des outils SIG issus du cloud qui permet aux élèves d’apprendre avec souplesse, de renforcer la connaissance de leur environnement […]

Cet article Les SIG dans les écoles est apparu en premier sur Veille cartographique 2.0.

15:31
11 Manières de Devenir Indépendant en Géomatique
sur GEOMATICK
Vous êtes en pleine réflexion sur votre avenir professionnel? Vous vous ennuyez dans votre travail actuel, vous avez le goût du risque ou vous cherchez un complément financier pour arrondir vos fins de mois? Vous souhaitez créer un business cartographique ou une start-up s’appuyant sur les fondements de la Géomatique? Être indépendant et géomaticien est possible et cet article présente onze manières pour apporter de la valeur à vos clients dans les domaines des Systèmes d’Informations Géographiques (SIG) et de la Télédétection. Chaque catégorie présente des missions associées avec des potentiels de mise en œuvre réels mais inégaux selon les compétences requises et la pérennité des revenus.
1. Gestion de données géographiques
Certainement l’un des piliers le plus pérenne, la gestion de données géographiques ou GeoDataManagement offre un panel important de prestations à réaliser puisqu’elle se décline dans la phase de prise en charge de l’information et aussi en fonction des différents domaines d’applications. Comme aujourd’hui tout passe ou passera par le numérique, comme une grande majorité des éléments est spatialisée et comme le monde est en mouvement perpétuel, il n’y a aucun doute que le traitement de données géographiques est une discipline garantissant des demandes régulières et par conséquent des revenus assurés. Un client peut vous demander ainsi de réaliser des relevés topographiques, de référencer et de représenter les informations spatiales ou encore de numériser des documents tels les Plans Locaux d’Urbanisme (PLU). Plus en aval dans la chaîne de traitements, la compilation et la mise à jour de données géographiques dans une architecture SIG peuvent être aussi sous-traitées, ce qui permet aux entreprises de réaliser des économies importantes. Les secteurs d’applications sont vastes comme les travaux publics, l’immobilier, l’urbanisme, l’environnement. Par exemple, en France, on enregistre une forte demande pour la gestion des données liées aux déploiements des réseaux Fiber to the Home (FTTH ou Fibre jusqu’au domicile) par les opérateurs des télécommunications sous l’impulsion des investissements publics.
- Avantages : Revenus récurrents et pérennes, Demandes importantes et diverses.
- Inconvénients : Difficulté d’automatiser certaines tâches, Investissements en matériels et outils SIG nécessaires pour certaines missions.
2. Production de Cartographies
Difficile de parler de Géomatique sans parler de cartographie. En aparté, vue de l’extérieur par les non initiés, un géomaticien est souvent assimilé à un cartographe alors que les géomaticiens eux-même oublient que la cartographie est la base du métier. Cela s’explique simplement car les cartes ne sont plus réalisées à la main et que les outils SIG permettent aujourd’hui de minimiser le temps passé à produire un document cartographique. La bonne organisation des données géographiques décrites précédemment est d’ailleurs essentielle pour générer des cartographies rapidement. Par conséquent, la gestion des données et la cartographie sont souvent réalisées par la même structure.
- Avantages : Facilité de création par les outils SIG.
- Inconvénients : Dépendance liée à la gestion des données géographiques.
3. Prestation en Développement Informatique SIG
La construction de WebSIG et d’applications mobiles liées à la cartographie ou la mise en place d’architecture SIG répondent à des besoins fréquents de structures privées et publiques. La maîtrise d’un ou plusieurs langages de programmation informatique permet de développer des WebSIG, des interfaces de WebMapping ou encore des applications. Selon l’ampleur du projet, il est tout à fait envisageable de se répartir les travaux avec d’autres développeurs. Toutefois, répondre à des projets d’envergure avec un cahier des charges conséquent nécessite souvent un partenariat avec une structure à capital afin de répondre aux appels d’offre.
- Avantages : Revenus importants, Élargissement des collaborations.
- Inconvénients : Difficulté de travailler seul pour les projets d’envergure.
4. Formations SIG
Vous êtes expert sur l’utilisation d’un logiciel ? sur la gestion de base de données ? etc. Si vous avez acquis une bonne expérience dans votre spécialité liée aux SIG, il est alors temps de transmettre votre savoir-faire aux professionnels qui veulent se mettre à niveau ou « passer à la vitesse supérieure ». En tant que consultant, vous pouvez vous appuyer sur un organisme de formation ou travailler seul afin de répondre à des besoins spécifiques d’entreprises et de collectivités.
- Avantages : Élargissement des collaborations.
- Inconvénients : Demandes aléatoires, Travail de conception et de mise à jour conséquents.
5. Enseignement en Géomatique
Les établissements d’enseignement supérieur sont souvent demandeurs de chargés de Travaux Dirigés pour enseigner les fondamentaux et les spécificités d’outils SIG. Les intervenants professionnels délivrent quant à eux leur expérience dans les divers applications et métiers de la Géomatique. « Donner le goût » du métier aux futurs géomaticiens est essentiel pour le maintien et le renouvellement de la discipline.
- Avantages : Revenus récurrents et pérennes.
- Inconvénients : Travail de conception de contenu et de mise à jour conséquents.
6. Études géospatiales
Réaliser des études dans des domaines tels le climat, l’environnement, l’urbanisme, le foncier ou encore le géomarketing demande souvent des compétences approfondies. Les analyses statistiques et scientifiques qui découlent des traitements de données géographiques apportent une forte valeur ajoutée aux rapports d’études. Comme pour les prestations en développement informatique, en tant que travailleur indépendant, il est intéressant de s’associer à des bureaux d’études et des laboratoires scientifiques pour faire valoir ses services.
- Avantages : Élargissement des collaborations.
- Inconvénients : Demandes spécifiques.
7. Expertise et Conseil en Géomatique
Une vision globale des outils SIG couplée à une expérience reconnue dans le domaine permet de conseiller les différentes structures utilisant des données spatialisées. L’expert guide le client dans le choix d’une architecture SIG, d’un prestataire ou encore la construction et la refonte d’une architecture SIG.
- Avantages : Investissement nul.
- Inconvénients : Besoin d’une forte expérience et autorité dans le Domaine.
8. Pilote de Drone et applications en SIG
En vogue pour de nombreux métiers, l’utilisation des drones connaît un fort développement pour acquérir des informations géographiques à des échelles spatiales et périodes choisies par les clients. En France, devenir pilote de drone professionnel nécessite la détention du permis ULM et de nombreuses démarches administratives sont requises avant de pouvoir réaliser vos vols et prestations. La détention du permis ainsi que la connaissance des différentes technologies innovantes sont des atouts certains pour proposer des services innovants.
- Avantages : Technologies diverses et innovantes.
- Inconvénients : Demandes aléatoires et spécifiques.
9. Commerce de logiciels et d’outils SIG
On n’y pense moins souvent mais s’appuyer sur des technologies et logiciels déjà connus sur le marché afin de les revendre garantit une indépendance financière certaine à condition de développer une véritable expertise sur les outils et logiciels vendus.
- Avantages : Profiter d’une technologie connue.
- Inconvénients : Trouver de nouveaux clients.
10. Apport d’affaires en Géomatique
Vous avez une demande de réalisation d’une prestation ou d’une formation par un client mais vous n’avez pas les compétences ou simplement pas le temps de répondre aux besoins, vous pouvez faire appel à un sous-traitant pour lequel vous avez confiance.
- Avantages : Revenus « faciles », Élargissement des collaborations.
- Inconvénients : Forte dépendance aux sous-traitants.
11. Création de Business Cartographique en ligne
Certainement l’un des domaine les plus difficiles à mettre en place mais aussi l’un des plus stimulants, la création de business cartographique sur internet requiert des compétences variées et complètes. L’objectif est de délivrer du contenu et des informations spatialisées de manière automatisée et payante. Cette automatisation vous permet d’une part d’assurer des revenus récurrents mais aussi de vous libérer du temps pour créer un nouveau business et apprendre de nouvelles technologies en SIG.
- Avantages : Revenus récurrents et pérennes, Revenus très importants selon le marché.
- Inconvénients : Mise en place difficile, Bénéfices non garantis.
En conclusion, il existe de nombreuses manières de développer des prestations et services dans le domaine de la Géomatique. A travers des situations professionnelles passées et actuelles, on acquiert une certaine expertise dans les domaines des SIG et de la Télédétection. Alors, pourquoi ne pas transmettre et délivrer ce savoir-faire aux structures publiques ou privées et aux personnes qui en ont besoin ? Pourquoi ne pas utiliser cette passion pour créer des services en ligne et devenir libre financièrement ? Évidemment, il est difficile voire impossible de maîtriser toutes les façons de devenir géomatiquement indépendant mais chacun doit se dire qu’il peut apporter de la valeur et une plus-value dans l’un des domaines présentés. Si le fait de se lancer seul effraie ou certaines phases de développement de l’activité paraissent bloquantes pour certaines personnes, la réponse évidente est de se faire accompagner et de collaborer.

2:38
Run, edit, document and store a setting model in QGis 2.8
sur Blog SIG & Territoires ---- Le blog SIG pour la gestion territoriale
Run a model

The model can be run in two ways:
- from the graphic modeller window, or
- from the Box processing tools panel
To run a model from the graphic modeller window,
click the button Launch themodel:

To run a model from the setting toolbox panel, firstly save and close the model. Then, find the model by accessing setting|Toolbox|Models, right click on the model to be run and select perform in the context menu.

In our example, the model is in the OysterCadastre group.
The model dialog box opens with the information fields for the entries defined in its design.

In order to input the data layers , you can choose the data loaded in QGIS by using the drop-down arrow, or you using the Browse button ([…]) to locate the data in the disk .

When you use the drop-down arrow, the window depicts the loaded layers corresponding to the defined type at the model entry. In order to enter plots we have pointed out that the vector layer had to be a polygons layer. Therefore, the window depicts the two polygon type layers that are actually loaded: the plots and the land.

In the Installations type entry, we have indicated a point vector type layer. The window displays the only layer of this type currently charged. Distance , has, by default, a value of 500m as defined in the model .

For the output, you can choose to create a temporary or definitive layer.
In the first case, you leave the field empty. The shape is created in the user temporary
repertoire, and will be cleared with the remaining contents by closing the QGis
session. In the second case, you enter a path and file name for the resultant layer.

The box to be checked is Open the file
Output after running the model loaded
in the resulting mapping layer window, if it is checked .

Click RUN to run the model .
The dialog box will switch towards the Log tab, which provides an
output during the execution .

The result appears in the following figure:

The plots and land areas in red correspond to a distance of 500 m from
the oysters’ establishments.

How to edit a model

The existing models in QGIS can be modified as needed. A right click on
a model in the processing toolbox panel opens a context menu. Edit
model opens the model in the modeller graphic window. The model can
also be deleted by right clicking on Delete model.

If a model is opened in the graph modeller window, you have, of course,
the same possible editing entries for the model: by clicking on the pencil icon
for a model entry, you will open the parameter definition dialog and you will
have the chance to make the desired changes; by clicking the button (X) you will
remove the entry of the model.

Regarding the algorithms, the information about
the algorithm parameters can be displayed by clicking the + signs
located above and below an algorithm. This is a convenient way to see the
parameters of the algorithm without having to open each algorithm.

A right click on an algorithm opens a context menu, as you can see in the following screenshot.

By clicking Remove you delete the algorithm of the model if there is no other algorithm that depends on it.
If you try to delete an algorithm in the middle of a workflow you will see the following message:

The elements located downstream the algorithm will have to be deleted
before you can remove this algorithm.

By clicking Edit in the algorithm contextual menu, you open
the algorithm dialogue window. Therefore, you can enter your changes.

After editing an algorithm, the connections to others elements of the
model will be updated . The algorithm parameters displayed by clicking the sign
+ above and below the algorithm will also be updated.

By clicking Deactivate ( disable ) in the algorithm context
menu you disable the algorithm as well as all the downstream algorithms that
depend on this algorithm . An algorithm can be reactivated at any time by right
clicking and choosing Activate ( activate ). By cons, if the deactivation
of the downstream algorithms is done automatically , you will activate each
algorithm individually .

How to document a model

Warning: The update of the update file does not work for versions 2.8, 2.8.1 and 2.8.2. A bug makes that all edits with the publisher help be lost. Usually, the following QGis update should have this problem resolved. You can inquire a model help by clicking the Help model editor button in the graphic modeller window.

This will open the Help Editor window that has three panels. At the top is an HTML page with spaces reserved for the description of the algorithm, and sections for the input and output parameters. In the lower left corner, you have an elements selection box, and in the right bottom corner input text box. To edit an item, select the left window, and then use the right box to enter a descriptive text. Click OK when you have finished.
This information help will then be available in the Help tab when the tool is in run mode.

How to save, load, and export models

The models can be saved at any time by clicking
the Save button in the setting modeller window.

Do not hesitate to save your job regularly… As we have mentioned in the modeller configuration, the first time you record a model, you will be asked to name the model file. For updates, they will be automatically done for the recorded file unless you want to change the name of your model file. In this case, you will use the Save As… button

The models that are not recorded in the default folder of the models can be opened in two ways:
• By activating the Box processing tools panel, navigating Models|Tools, and then double-clicking Add model from a file
• By using the graphic modeller window and clicking OpenModel.

In both cases, you must select .Model file.

The models can also be exported as image files.
This is useful if the workflow needs to be presented and included in a report.
To export a model, click the ExportAsPicture
button .

The model will be saved as a PNG file.

Scripts collection Currently, QGIS counts with an online collection of models and scripts that can to be loaded. In the panel of the setting toolbox, navigate to Models|Tools and double-click Get models from the collection of scripts online.

The new models will be loaded in the Models section of the panel under the group Models example.

This collection of online models will be constantly expanded by QGIS users.

02 octobre 2018
18:12
On-demand SENTINEL2 L2A processing with MAJA on PEPS
sur Séries temporelles
Update : added a script to submit and download MAJA jobs on PEPS

Getting a Sentinel-2 L2A product (with atmospheric correction and cloud detection) anywhere has never been so easy. Until now, you had two options to access to Sentinel-2 L2A products obtained from the MAJA processor :
- If you a were lucky enough and your region of Interest was among Theia's ones, you just had to download the data from [https:]]
- If you were unlucky, you could download MAJA processor and directly process your data sets on your computer. But it required some computer skills.
Starting from today, there is another possibility: an on-demand MAJA processing from the French Sentinel collaborative ground segment PEPS. The possibility is a proof of concept, and if a lot of people use it at once, we do not know how the processing time will evolve. But the only way to know it is to try it, hoping the processing and download capacity is sufficient. Anyway, it you intend to process a whole country, we hope you are from Belgium, and not from Australia.

However, if your site is above 60°N or under 60°S, you are still unlucky, as MAJA needs SRTM DEM to work. We will try to implement the use of Arctic DEM one day.

PEPS/MAJA processing page (don't worry, english language is also available)

So how does it work ?
1. go to [https:] create an account, log in.
2. Use the explore Menu, select your data. I like the semantic research possibility, for instance, you can ask for Sentinel-2 L1C Toulouse August, and you'll get all the products available in August.
3. Select the ones you are interested and click on the gearing icon.
4. Go to "your processing center" page (top left, with the gearing icon in black)
5. Select the "MAJA atmospheric processor" and the products to process. It only works for Sentinel-2 L1C in single tile format, no need to try to process a Sentinel1 image,+ a S2 L2A image, or the old S2 format grouping several granules. Then press on "Process the products"
6. Go to "My processing" page
7. Wait (don't be fooled by the percentage, it goes fast at the beginning, but it takes between 1 and 2 hours)
8. Download the results. If the image you chose contains more than 90 % of clouds, you get a filename which starts with "NOVALD" for "Not Valid".
OK, it's a lot of clicks, I am pretty sure you will not try to process the whole Australia like that. As this processing is made through the Wep Processing Service (WPS) interface, there is a way to do that using only http requests, with no click. With the help of Christophe Taillan, I have implemented two sample scripts to help you do that (the first users will be beta testers). The first script submits Maja processes on PEPS, the second one checks thir completion and eventually download results. The scripts are available on github.

The processing takes between 1 or 2 hours for one product. This is due to the fact MAJA is a multi-temporal processor,it does not provide its best result when only processing one image, but when processing a whole tile series of images. When you ask for one product, PEPS actually processes, not 1, not 2, not 3... but 8 of them to get a good initialisation. But it only delivers the one you asked for. If the image you selected is not too recent, the 8 products will be posterior to that date. If the product was just acquired, the 8 products will be anterior.

This procedure is not optimal. if you want all the products in July 2018, for each product MAJA will use its backward mode, and process the seven products after that date. Some of these products will be therefore produced 8 times. As I said, it is a proof of concept, the PEPS team will soon propose more efficient ways of delivering the data.

What about the quality of results ?

Left THEIA product, right PEPS product. Both are generated by MAJA, but with a different history, as MAJA is a multi-temporal processor. The clouds are circled in green, the shadows in yellow, and water in blue

The above figure compares a MAJA product from Theia on the left, and a MAJA product on the right. Reflectances are nearly identical, cloud masks only slightly differ. The differences are due to the fact that both productions do not use exactly the same history or products. The Theia product should be a little better in general, but differences are low, provided the period is not too cloudy.

Just one warning, if the product you ask for is the only clear one in a very cloudy sequence of 8 images, do not expect a good result, due to the fact that we limit the history to 8 images. MAJA in THEIA context would produce a better result as it use longer periods of time.

The PEPS team will be happy to have feedback ! You might comment here or write to them.

By the way, who did what ?

Christophe Taillan did most of the development work, with some help from Erwann Poupart and myself, Vincent Garcia and the exploitation team make sure that everything works, Patrice Henry, the big boss, enabled the project, which was started by Mireille Paulin (to whom we think a lot). You may even see their photographs in the "who are we" page, here.

17:30
La conférence SIG 2018 ESRI, un enjeu fort de légitimation de la géomatique
sur Veille cartographie

Cet article La conférence SIG 2018 ESRI, un enjeu fort de légitimation de la géomatique est apparu en premier sur Veille cartographique 2.0.

La 22ème conférence francophone SIG 2018 ESRI aura lieu les 10 et 11 octobre 2018 aux Docks de Paris à Aubervilliers, au nord de la capitale. Ces conférences ont lieu chaque année et entendent rassembler la communauté de géomaticiens et d’utilisateurs de SIG. Il s’agit d’une occasion rare de rencontrer étudiants, professionnels du secteur privé, […]

Cet article La conférence SIG 2018 ESRI, un enjeu fort de légitimation de la géomatique est apparu en premier sur Veille cartographique 2.0.
17:20
Le programme Urbact III améliorable par la cartographie interactive ?
sur Veille cartographie

Cet article Le programme Urbact III améliorable par la cartographie interactive ? est apparu en premier sur Veille cartographique 2.0.

Le programme améliorable par la cartographie interactive ? « Urbact » est un programme européen lancé avec « Urbact I » en 2002 qui cherche à trouver des solutions aux différents enjeux et problématiques que peuvent rencontrer les villes européennes. Le programme « Urbact III 2014-2018 » porte son attention sur les thèmes de l’emploi, […]

Cet article Le programme Urbact III améliorable par la cartographie interactive ? est apparu en premier sur Veille cartographique 2.0.

14:43
Sentinel-2 captured the fault line through Palu, Indonesia
sur Séries temporelles

On Sep 28 a 7.5 magnitude earthquake struck the city of Palu, in Sulawesi Indonesia. The quake was followed by a tsunami. The animation below shows two Sentinel-2 images before and after the earthquake in Palu. If you look closely you can see the horizontal displacement due to the fault movement through the city. It also shows the damages caused by the tsunami wave.

Apart from the fault line there is a general shift between the images due to an inaccurate multi-temporal geolocation of Sentinel-2 images. A reprocessing is planned by ESA to improve the coregistration of Sentinel-2 images using ground control points from a global reference image.

The post-event image was acquired by Sentinel-2A on October 02. The coregistration is better if one take as a pre-event image an image acquired by Sentinel-2A too on September 02.

By the way, the fault movement is also visible using Landsat:

But the mis-registration is also evident if Landsat images are taken from two different orbits:

Shaky place..

At larger scale, the same images reveal the landslides which occurred in the aftermath of the earthquake.

This could be the worst landslide disaster in five years.

6:00
Tutorial QGis 2.8 graphical modeller
sur Blog SIG & Territoires ---- Le blog SIG pour la gestion territoriale

In this tutorial, we will address the automation processing chains with QGIS processing modeller.
We will see how to set, edit, document and run a template. You will learn how to add data input and processing algorithms in a model. We will, also, discuss how to run the models iteratively as well as how to fit them together in others, and how to perform the models in batch mode.

Firstly, we will introduce the modeller and explore the various types of
inputs and algorithms available for the models. Then, we will discuss, using examples step by step,
how to develop a model that can be added to the processing toolbox.

The topics
that we will cover in this tutorial are:

Chapter 1:
Introduction – Opening the  graph modeller, configure the modeller and name a model .
Chapter 2: The input
data a model .
Chapter 3: The processing algorithms for a model
Chapter 4: Run , Edit , Document, and Store a Template
Chapter 5: Iteration and nesting of models . Export as a Python
script

If you want to follow the tutorial with the same data, you can download it  following this link

Chapter 1: An introduction
to the  graphic modeller

When you perform a spatial analysis, usually a series of
operations are included. The result of
one operation is used as an entry
for the following operation. The final result concludes all this series of operations. In using the graphic modeller, you can combine these different steps in a single process. The
interface of the graphic modeller allows you to visually define the data as input, the output data and the processing algorithms.
The entire analysis is, therefore, ready to be used,
as a personalized tool, in the processing toolbox.

The personalized tool looks like other tools in the processing toolbox. You run it by double-clicking, a setting window opens , and after the
identification of the input data layers
and the wished names  for the results,  the entire analysis will take place in one step .

A major advantage of this approach is that the executed analytical work can be modified and run again. This allows
seeing or understanding how changes in thresholds or values in the input data affect the
results of an analysis.

If you perform an analysis for the selection of sites, you use many criteria through
classifications according to specific thresholds for each criterion (distance, cost,
etc.). If you ask at the
end of the analysis, which would
be the result if changing one of the thresholds, if you have performed
the analysis manually step by step, you will have to redo all the steps. If, on the other
hand, you have performed the analysis using a model, you will only have to modify the value of
the threshold concerned and
to re-execute the model .

Another advantage is that
the model could be reused in others territories, simply changing the input data.

How to open the graphic modeller

The graphic
modeller can be opened through the QGIS interface using one of the two following options:
• By clicking on    GraphicModeller from the menu   Treatment

• By activating the panel   Boxprocessingtools and in Models->Tools   click  Createa newtemplate

The process modeller window opens . On the left side of the window, there are two tabs:   input   and   algorithms. They are used to add these two types of elements in the window graph of the modeller that occupies the rest of the window.

How to set up the modeller and
give a name to our model

Before starting a model, it is advisable to set up the modeller. The models are saved as files in JSON format with the extension   .model   . When you save a template, QGIS gives you the option to save the file in the   templatefolder. You can define the location of the models folder by accessing the menu   Treatment|options   in QGIS. In the section Models   of the setting options window, you can specify the location of the templates folder. Double- click on the default folder path and the button   Browse  ([…]) is displayed, and allows you to select another location:

To illustrate the basics of the modeller graph use we will employ a simple example that identifies the oyster plots located around the oysters establishments. There will be three entries and two algorithms. Firstly, we will give   a name to our model as well as to the group. For this example, as shown in following screenshot  we have opened the modeler graphicand named the model    riparianplots and the group of models   Oystercadastre .
This is the group and the name with which the model will appear in the setting toolbox.

Then, we click the Save button .   The dialog box  SaveTemplate  opens, by default, in the folder   models. Here you must choose a name for the file   .model. We will call it   riparianplots.model.

The model and the group name have to be defined before the model is recorded . If the models are registered in the default templates folder (..users / .qgis2 / processing / models), they will appear as layout tools in the panel of the processing toolbox (it   will appear in this group in the processing toolbox).

The model appears with
the name that was entered
in the graphic modeller,
as opposed to the one that was recorded in the disc.

The models can be registered outside the default template folder, but in this case
will not appear in the panel of the
setting toolkit.

01 octobre 2018
19:05
La chasse à la baleine : une discipline à géomatiser.
sur Veille cartographie

Cet article La chasse à la baleine : une discipline à géomatiser. est apparu en premier sur Veille cartographique 2.0.

Elles sont l’objet des traques les plus longues, recherchées pour leur chair onéreuse par les chasseurs les moins scrupuleux de la planète. Nous parlons bien-sûr des baleines ! Ces mammifères marins qui font depuis une décennie maintenant, les choux gras de l’industrie du jeux vidéos. 2017 fut une année césure pour les jeux vidéos mobiles. […]

Cet article La chasse à la baleine : une discipline à géomatiser. est apparu en premier sur Veille cartographique 2.0.
19:03
Les déplacements vélo et la marche à pied à Rennes
sur Veille cartographie

Cet article Les déplacements vélo et la marche à pied à Rennes est apparu en premier sur Veille cartographique 2.0.

Du point de vue économique et écologique, le vélo est le moyen idéal qui permet de se déplacer en ville. C‘est pourquoi Rennes s’est engagé depuis le 12 février 2018 dans la politique de développement des déplacements vélo et de marche dans la ville. Afin d’améliorer le cadre de vie des habitants et d’assurer un […]

Cet article Les déplacements vélo et la marche à pied à Rennes est apparu en premier sur Veille cartographique 2.0.
19:00
GuidiGO : RISK en balade
sur Veille cartographie

Cet article GuidiGO : RISK en balade est apparu en premier sur Veille cartographique 2.0.

Guidigo est une application en ligne, gratuite, qui permet de créer à partir d’un ordinateur, des parcours de visite mêlant cartes, légendes, commentaires audio, images et vidéos. Très facile d’utilisation, elle permet de créer un véritable guide touristique de sa ville, de son quartier ou bien même de son école puisque Guidigo fonctionne aussi pour […]

Cet article GuidiGO : RISK en balade est apparu en premier sur Veille cartographique 2.0.
18:10
Sysnav : des systèmes de navigation et de géolocalisation sans GPS
sur Veille cartographie

Cet article Sysnav : des systèmes de navigation et de géolocalisation sans GPS est apparu en premier sur Veille cartographique 2.0.

Sysnav est une PME Normande créée en 2007 qui met en œuvre des systèmes de navigation, de géolocalisation et de détection des mouvements, sans GPS. Elle utilise une technologie dite « magnéto-inertielle » qui ne nécessite ni infrastructures, ni GPS (sans satellites). Ces technologies sont mises au point dans le laboratoire R&D de Sysnav, en collaboration avec […]

Cet article Sysnav : des systèmes de navigation et de géolocalisation sans GPS est apparu en premier sur Veille cartographique 2.0.

5:20
ArcGis Pro 1.0 Update: a small collection of nasty surprises 28/05/15
sur Blog SIG & Territoires ---- Le blog SIG pour la gestion territoriale
You have installed 1.0 and started watching this new tool. You will discover a
lot of good things,
more or less obvious at
first sight. But also,
little by little, some small (or big) bad surprises.

We have listing right
here a few ones. Since the list is not necessarily complete ,
we will update
it regularly .

Here is  the list as of 28 May 2015:

Cannot access and use SpatiaLite databases

ArcGis Pro does not recognize. sqlite
files, even those created with
ArcGis Desktop. Like the dlls required are
included in ArcGis
Pro 1.0 you can
expect they
will be accessible in the next version of ArcGis Pro
( or not).

Cannot use another address geocoder but the one provided by
ESRI

For the time being it is not possible
to disable the default geocoder. You can add local geocoders but you cannot make ArcGIS Pro
use them instead the standard one.

No hooking grid in the page layout window

To put in place
the different elements of
the page layout, you will only have the installation properties of each object. No rules, no guides, no hooking grid. They are promised
for the next version…

———————————–
Here is the list at
30   April 2015:

Labels and annotations? No, just labels

For now, ARCGIS
Pro supports only the labels on the fly. You have no way to convert them in annotations, with all that that it
includes. If you are not satisfied with
the position of your labels , you must leave to return to ArcMap and build it the old
way. By cons, if you cannot create  or edit them in ArcGis
Pro, ArcMap annotations can  be loaded and viewed in ArcGis Pro.

Cutting the data block on
the fly

If you use this option for an
adequate result of your page setting, be
aware that the possibility does exist in ArcGis Pro. Nevertheless, the extra
option to add exceptions does not, yet, exists. For a detailed example, refer you to the article   ArcGis Pro
1.0 Tutorial English : 4.1 – migrate an ArcMap document .

Block layout data on page

You have to know that there are unfinished sections! In the page setting, all that corresponds
to the tab Gridlines in the properties window of the ArcMap data block , does not exist yet. You cannot perform neither Graticule nor Grid nor Landmarks .
And there, frankly he there is
not much to do to solve the problem. I
will not repeat the advice found on an ESRI forum to make the grid with
ArcMap, convert in graphics and import to ArcGis
Pro, the changes  being managed automatically by you by leaving and returning to ArcMap ???

————————————————–
—-
Here is the list such what was at April 5 , 2015

You cannot add connections
OGC (WMS, WFS, …) in a project

If you are used to work with OGC connections, there’s no way to open a new project and make the connection to the services. A next version should add this feature.

For now, we can get around this problem by knowing that if you open with ArcGIS Pro an ArcMap document depicting connections, they are used in ArcGis
Pro. What is missing is not
the use section of the OGC connections, it’s only the configuration section of the connections.

Instead of
opening a new ArcGIS Pro project, start by creating a
map document with your configured connections and import the
document to ArcGis
Pro.

You cannot load an Excel table in ArcGIS Pro 1.0

Astonishing, right? But true. If you “Load data”
and you browse
your directories, you will not find Excel files.

To get around the problem you can import the Excel table into a geodatabase table. You
use the  »   Import   «
tool from the toolbox
« Data Management   »->   »Excel   «

Invisible Directories

This is a bug rather than a tools missing problem. But since this can quickly turn into
a nightmare, be warned. Sometimes you want to load a layer and you are desperately
searching for the repertoire. You see your tree but where your directory should be present, it is not. Until this bug is resolved, in the name window of the layer to be loaded, type the full
name of the file with its path. This will load your layer.

No animation available in 3D views

Everything about the 3D overview  and
animation creation is not yet coded in ArcGis
Pro. So, no way to bypass this problem. So, you will have to wait for  a future
version to have a 3D  levelview of what is feasible with ArcSCene .

Statistics of
a field table

In ArcMap you have the option
“statistics” in a field name in the attribute table. This allows
you to see “on the fly” the min and max values ,
the total sum, etc. ,
for the column or records selected . This option does not exist in ArcGis
Pro where you have to go
through the geprocessor to create a statistics table of the
field.

No georeferencing tool

If you use the georeferencing ArcMap
toolbar, do not look for an equivalent in ArcGis Pro. For now (maybe in a future version) you have a Toolbox tool , very , very rudimentary .A workaround: continue to georeference your rasters with ArcMap.

Search a value in a table

In ArcMap you can use the Ctrl-f sequence to search a value in a column of a table. For now this function is not implemented in ArcGis Pro.

Seeing a TIN in the 3D view,
not possible

If you work with
TINs, you can load, see
and use them in a 2D view in ArcGIs Pro.
Regarding the 3D view, you can use
a TIN as reference surface, but you can not visualize it. You cannot charge it as a 3D layer.
Solution: in a next version.

Editing the topology in ArcGis Pro: Not
for the time being

The set of editing tools for the topology are missing. We will have to wait that a future version do have it .

30 septembre 2018
19:00
Le projet HIREAU et la datation des réseaux d’eau
sur Veille cartographie

Cet article Le projet HIREAU et la datation des réseaux d’eau est apparu en premier sur Veille cartographique 2.0.

Le Projet HIREAU a permis de fonder un guide opérationnel concernant la datation des réseaux d’assainissement et d’eau potable. Nous allons donc nous appuyer sur ce guide pour en faire sortir des éléments de recherche et pour comprendre l’utilité du champ « Date de création » dans les bases de données des services gestionnaires des réseaux AEP (d’Adduction Eau Potable) et d’Assainissement.

Cet article Le projet HIREAU et la datation des réseaux d’eau est apparu en premier sur Veille cartographique 2.0.
18:45
L’urbanisme open source, une nouvelle démarche pour améliorer les smart cities ?
sur Veille cartographie

Cet article L’urbanisme open source, une nouvelle démarche pour améliorer les smart cities ? est apparu en premier sur Veille cartographique 2.0.

La smart city ou ville intelligente, un concept unique qui vise à améliorer la qualité des services urbains tels que (services automobiles, travail à distance …) et en réduire les coûts. L’ensemble des villes considérées « intelligentes » ne le sont pas suffisamment, car les fonctionnalités numériques sont basées sur un contrôle centralisé, alors il […]

Cet article L’urbanisme open source, une nouvelle démarche pour améliorer les smart cities ? est apparu en premier sur Veille cartographique 2.0.
29 septembre 2018
21:00
Les comportements de mobilités humaine et animale comme outil d’aide à la réflexion sur l’aménagement de flux.
sur Veille cartographie

Cet article Les comportements de mobilités humaine et animale comme outil d’aide à la réflexion sur l’aménagement de flux. est apparu en premier sur Veille cartographique 2.0.

Dans un article publié en Février 2018 dans la revue L’information géographique, L. Gagnol, C. Mounet et L. Arpin explorent de nouvelles pratiques d’études comportementales des êtres vivants, aussi bien humains qu’animaux, à l’aide de la géoichnologie.

Cet article Les comportements de mobilités humaine et animale comme outil d’aide à la réflexion sur l’aménagement de flux. est apparu en premier sur Veille cartographique 2.0.
20:59
Le Tour de France et sa cartographie, un outil de valorisation pour la géomatique ?
sur Veille cartographie

Cet article Le Tour de France et sa cartographie, un outil de valorisation pour la géomatique ? est apparu en premier sur Veille cartographique 2.0.

Le Tour de France, épreuve plus que centenaire, est le troisième événement sportif au monde et se déroule sur trois semaines durant le mois de juillet. Il parcourt les routes de France chaque été. Près de 200 coureurs cyclistes pédalent environ 3500 kilomètres à travers la France mais font aussi, ce qui arrive de plus […]

Cet article Le Tour de France et sa cartographie, un outil de valorisation pour la géomatique ? est apparu en premier sur Veille cartographique 2.0.
28 septembre 2018
19:00
GeoRacing et La Solitaire URGO le Figaro : une solution cartographique pour suivre ou revivre une course sportive
sur Veille cartographie

Cet article GeoRacing et La Solitaire URGO le Figaro : une solution cartographique pour suivre ou revivre une course sportive est apparu en premier sur Veille cartographique 2.0.

Vous voulez suivre un événement sportif outdoor en temps réel ou revivre une course ? Découvrez GeoRacing, une solution graphique de suivi en temps réel pour le digital développée par Trimaran. L’exemple de La Solitaire URGO le Figaro, célèbre course de voile en France La Solitaire du Figaro, l’une des plus prestigieuses courses à la […]

Cet article GeoRacing et La Solitaire URGO le Figaro : une solution cartographique pour suivre ou revivre une course sportive est apparu en premier sur Veille cartographique 2.0.

4:44
ArcGis Pro 1.0 Tutorial English: 4.3 – adding a layout
sur Blog SIG & Territoires ---- Le blog SIG pour la gestion territoriale

If the creation of a map is relatively close to
what we do in ArcMap, for the creation of a layout a non-negligible
intellectual exercise is required. The
ArcGis Pro Ribbon allows you to re-group commands that are a bit scattered in
ArcMap. The only place where we can say everything
is pretty much grouped is the Layout section of ArcMap. In ArcGis Pro you will wander from tab to tab and
from button to button … So let’s get what it takes and attack the ArcGis Pro
Layout.

Firstly I propose to discuss the conceptual
differences of the Layout compared to what you know about ArcMap, and, finally,
considering an example.

An ArcGis Pro layout is a map view just like a map
or a scene. When you add a   Layout, a new tab is created in the map views. Each map view is independent and has its own settings. On the other hand, a layer loaded in ArcGis Pro is stored
just once, even if it appears in several map views (a map and a scene, or a map
and layout, etc.). If you turn off the display of a
layer in a view, it will automatically turn off in all other views where it
appears. On the other side, the display scope of
a view does not change the scope of another view. Forget
the link between the data window and the ArcMap layout window! You will have to define the scope of your map in
the layout, obligatorily.

To display a map, you will have to create a map frame. You can create map windows corresponding to a map in
your project, or simply empty map windows, if you are building a layout
template.

In ArcMap you have two buttons bars allowing you to
zoom, move, etc., one for the data, the other for the page layout. If you want to change the scope you will zoom on
the data, and if you want to see in more detail how your data appears, you will
zoom on the layout.

Here, by default you are in layout mode. When you use the mouse cursor or the wheel, you control
the sheet layout. If you want to control the data, for
example move the view and zoom in a section, you will have to   activate   the
map window. Then, it will change to data mode.

Let’s see an example. We continue with our data from the two previous
articles (   ArcGis Pro 1.0 Tutorial English: 4.1 – migrate an ArcMap
document , ArcGis Pro 1.0 Tutorial English: 4.2 – create a map   ).

To create a Layout, click the INSERTION Tab-> New layout

A window to define the support for the layout appears:

Then, you will have a new map view added, as well as the layout added to the project in the Project panel.

You will find in the ribbon, the tab   INSERT . This
is where you can add the different elements of the layout: map window, scale
bar, legend, etc.

Add a map window to the layout

To add a map window (the equivalent of the ArcMap data block) you will
use the button   Cartographic window   located at the tab   INSERT   ribbon.

If you click the button, a window with a scope by default is added. Initially this scope corresponds to the scope of your organization in ArcGis Online.
Tip: Set bookmarks on your maps. Instead of clicking directly on the Map Window button, expand it:

You will have the gallery of geo bookmarks that will allow you to choose an appropriate scope.

First thing to do: change the size and location of your window. You can click it and use the mouse to convey the desired size and position. To be as accurate as possible, you can use the FORMAT tab (visible only when you select the map window!):

How to modify the scope of the map window

Even with the bookmarks there is not a chance that the window scope could
match the desired scope. It must, therefore, be modified.
To do this, you must switch to ArcMap data mode, by activating the
window
Tab   Layout -> button   Activate

Your map window looks like this:

Now you can change the scope by zooming in and dragging the contents of the map window, as long as you find the adequate tool. But where is my standard ArcMap toolbar?! Forget it. To use the mouse to zoom and move, click for example on the Zoom In   button  Navigate group  of the Map tab

You can then click and drag the contents of the map
window, or zoom in and out with the mouse wheel. When
finished, close the activated mode by clicking on the red cross at the top
right or by clicking   layout   at
the top left.

How to shape the window

You do not want a rectangular map? No problem. Select your map window by clicking on it to bring up the tabs   CREATION   and   FORMAT .
In the CREATION  tab you have the button   REMODELER .

And if you deploy it, you will see the remodelling options

You define the new shape with the mouse.
Here is the result for the ellipse option

As there are, still,   too many
elements of the layout to discuss, we pause and continue in the following
article …

27 septembre 2018
17:30
Vers une évolution des documents et règlement d’urbanisme
sur Veille cartographie

Cet article Vers une évolution des documents et règlement d’urbanisme est apparu en premier sur Veille cartographique 2.0.

Aujourd’hui en terme d’aménagement du territoire, il existe plusieurs documents d’urbanisme qui régissent et encadrent l’occupation des sols. Auparavant ils se présentaient sous le format papier, mais ces derniers ont connu une évolution vers un format dématérialisé. Qui permettra une meilleure gestion et consultation de l’information. Des documents d’urbanisme dématérialisés : En effet, afin d’assurer […]

Cet article Vers une évolution des documents et règlement d’urbanisme est apparu en premier sur Veille cartographique 2.0.

15:53
Appel à communication
sur Cartes et figures du monde

Produire la carte : représentations transfrontalières et interculturelles de l’Antiquité à nos jours- Mulhouse, 20, 21 et 22 mai 2019

[www.cresat.uha.fr]

le CRESAT organisera en mai 2019 un grand colloque international et pluridisciplinaire sur les liens entre cartes, frontières et phénomènes transfrontaliers et interculturels. Intitulé « Produire la carte : représentations transfrontalières et interculturelles de l’Antiquité à nos jours », il aura lieu les 20, 21 et 22 mai 2018 à l’UHA. Vous trouverez l’appel à communication sur le site du CRESAT ( [www.cresat.uha.fr] ) en français, en anglais et en allemand.

Le colloque entend proposer une réflexion et des débats sur les modalités de représentation cartographique de phénomènes transfrontaliers et interculturels. Interdisciplinaire et international, il devrait encourager à penser la carte hors des frontières politiques, en proposant une réflexion articulée autour de trois axes : le temps (quelle a été la compatibilité de ces phénomènes interculturels avec les travaux de cartographie réalisés au cours de l’histoire ?), l’espace (quelles approches des phénomènes interculturels ou transfrontaliers selon les espaces d’études, de création et de diffusion des cartes ?) et la méthode (comment et pourquoi réaliser des cartes intégrant de tels phénomènes ?).

Les propositions de communication (5000 signes maximum) sont à envoyer à benjamin.furst@uha.fr avant le 30 novembre 2018, accompagnées de quelques lignes de présentation du ou des auteurs.

26 septembre 2018
18:00
« la Bio en poche » une application Bio !
sur Veille cartographie

Cet article « la Bio en poche » une application Bio ! est apparu en premier sur Veille cartographique 2.0.

En 2017 en France les achats des produits bio ont atteint 8,3 milliards d’euros, c’est 17% de plus qu’en 2016. L’appétit des consommateurs et la bonne diffusion expliquent majoritairement cette croissance. Les consommateurs français aspirent non seulement à consommer des produits bio mais souhaitent que ces produits soient de proximité. Dans le but de rendre service aux mangeurs […]

Cet article « la Bio en poche » une application Bio ! est apparu en premier sur Veille cartographique 2.0.
18:00
La télédétection: Un outil pour évaluer la pollution
sur Veille cartographie

Cet article La télédétection: Un outil pour évaluer la pollution est apparu en premier sur Veille cartographique 2.0.

Selon le Centre Canadien de Télédétection : « La télédétection est l’ensemble des techniques qui permettent, par l’acquisition d’images, d’obtenir de l’information sur la surface de la Terre, sans contact direct avec celle-ci. La télédétection englobe tout le processus qui consiste à capter et enregistrer l’énergie d’un rayonnement électromagnétique émis ou réfléchi, à traiter et analyser […]

Cet article La télédétection: Un outil pour évaluer la pollution est apparu en premier sur Veille cartographique 2.0.
18:00
Geocatching et découverte du territoire
sur Veille cartographie

Cet article Geocatching et découverte du territoire est apparu en premier sur Veille cartographique 2.0.

Et si on utilisait la géolocalisation pour la visite d’un territoire? Depuis quelques années une nouvelle application est apparue et permet de visiter une ville, un monument historique, une promenade sous forme ludique. Cette nouvelle forme de visite se fait à l’aide de plusieurs applications disponibles sur le marché et est plus communément appelé geocatching. […]

Cet article Geocatching et découverte du territoire est apparu en premier sur Veille cartographique 2.0.

4:49
ArcGis Pro 1.0 Tutorial English: 4.1 – migrate an ArcMap document
sur Blog SIG & Territoires ---- Le blog SIG pour la gestion territoriale
We have discussed the different types of map displays available in ArcGis Pro (ArcGis Pro 1.0 Tutorial English: 4 – Cartographic Views) . We will look in more detail at each type of display, starting with the migration of an ArcMap document. We chose a complex document that uses a lot of ArcMap options: personal symbology, variable footprints, a template created with Production Mapping, a complex layout…

The document to be imported

The map represents the direction and speed of the
current at a given moment of the tide.
The current symbols observe a very accurate formatting
(size, length and thickness) and are associated with comments that also follow
specific rules.
Since the scale of the canvas must correspond
exactly to the coordinates displayed, instead of the
standard Arc Map grid, a pattern has been created as entities with Production
Mapping. All elements in the pattern are feature
classes in a geodatabase. One of the layers represents the
internal surface (map) of the pattern and serves to cut immediately the finishing
layers (earth, isobaths) so that there is no superposition with the pattern.

Therefore we have an ArcMap document that has a
data view and a layout. We will import it into ArcGis Pro and
then we will have, obviously, a Map and a Layout.

The import

To import the document, we open ArcGis Pro by
choosing a blank project, and we open the project panel (if it is not already
open) by clicking on the tab   VIEW   ribbon and then the button   PROJECT.

To load the ArcMap document just right click on the Project Maps item
and select   IMPORT

Select the .mxd file of your document and click   TO
SELECT

The document loads in the map window

At the same time, a new layout that corresponds to the layout of the ArcMap document has been added.

But, if the display in the map view corresponds to the data view of the ArcMap document, it is because the document was saved with this view active. If we had saved the Arcmap document with Active Layout, the view loaded into ArcGis Pro would have been the layout, not the map.
In both cases, both views are added to the project and remain linked as in ArcMap: any changes to the map will be reflected in the layout.

Layout window imported into ArcGis
Pro

A detailed analysis of the result makes it possible
to understand that all that concerns the symbology and the layout is perfectly observed
during the migration of the document, except the cutting of the pattern layers.

Let’s see how the ArcMap document handles this
function.

The cutting is managed at the level of the data block, tab   Block of data.

The GRD_ layer of the pattern corresponds to the
inner extent of the pattern. It
is defined as a cutting layer for the data block, and the layers corresponding
to the pattern are defined as exceptions to the cut (Exclude layers) because
they are immediately outside the GRD_ layer and would be hidden in the layout.

In ArcGis Pro version 1.0 we find a similar window:   Map Properties -> Extended Tab

You will notice the resemblance to the upper part
of the ArcMap window, but, also, the absence of an exclusion option …

It will surely come in future versions, but for now
we must work around the problem.

The best way is to actually cut layers that
overflow. If at first glance it may seem a lot
of work, you will see that it is quite fast and, above all, easy.

We have two layers to cut, the earth layer and the isobath layer, which exceed
the frame.

Go to the tab   ANALYSIS  of the ribbon and click on   CUT

This opens the panel   geoprocessing   in the tool   CUT

Fill in the layer you want to cut, the cutting
layer, and name the newly created layer. Click EXECUTE .

The new layer is created and added to the map. It is just necessary to reposition it to the same level of the source
layer and disable it. The added bonus is that the symbology of the layer
source is automatically applied to the new layer. The result on the map is as
follows:

And on the layout:

Conclusion

Importing ArcMap documents takes place globally
without any problem, except for the on-the-fly cutting of some layers. The use of the button   CUT   solves this problem simply and quickly.
All the definitions contained in
the document are transferred to the two created views.
Warning! Definitions
of preferred and editable layers are also transmitted. If you cannot edit a layer in ArcGis Pro, consider modifying
this property.

25 septembre 2018
17:50
Air To Go : l’application pour la qualité de l’air
sur Veille cartographie

Cet article Air To Go : l’application pour la qualité de l’air est apparu en premier sur Veille cartographique 2.0.

Air To Go est une application mobile gratuite développée par l'ATMO Auvergne-Rhône-Alpes, un observatoire rattaché au Ministère de la Transition Ecologique et Solidaire qui a pour but de gérer les informations relatives à la qualité de l'air dans la région Auvergne-Rhône-Alpes. Le but de l'application mobile Air To Go est de permettre aux utilisateurs de calculer l'itinéraire dans lequel l'air sera le plus sain.

Cet article Air To Go : l’application pour la qualité de l’air est apparu en premier sur Veille cartographique 2.0.
17:40
Guide cartographique de la (Mal-)bouffe en France
sur Veille cartographie

Cet article Guide cartographique de la (Mal-)bouffe en France est apparu en premier sur Veille cartographique 2.0.

Mais comment la dataviz peut aider à la prévention de l’obésité et des mauvaises habitudes en France ? En 2016, 50% des français sont en surpoids d’après une étude de l’Institut National de la Santé et Recherche Médicale (Inserm), mais comment en sommes-nous arrivés là ? Voilà un problème auquel la datavisualisation et les outils 2.0 […]

Cet article Guide cartographique de la (Mal-)bouffe en France est apparu en premier sur Veille cartographique 2.0.
17:30
Google Dataset Search: le moteur de recherche de l’Open data
sur Veille cartographie

Cet article Google Dataset Search: le moteur de recherche de l’Open data est apparu en premier sur Veille cartographique 2.0.

Parmi les nombreux outils mis en place par le géant américain Google, le moteur de recherche dédié à l’open data est le dernier nouveau. Lancer le 5 septembre, il permet de rechercher les données par mots-clés, et propose différents resultats. . Ce moteur de recherche gratuit vise à aider les scientifiques, journalistes, ou toute autre […]

Cet article Google Dataset Search: le moteur de recherche de l’Open data est apparu en premier sur Veille cartographique 2.0.
17:15
Too Good To Go, une application pour lutter contre le gaspillage alimentaire
sur Veille cartographie

Cet article Too Good To Go, une application pour lutter contre le gaspillage alimentaire est apparu en premier sur Veille cartographique 2.0.

L’Agence de l’environnement et de la maîtrise de l’énergie (ADEME) nous apprend aujourd’hui qu’un tiers des aliments produits dans le monde ne sont jamais consommés. En France, cela représente 10 millions de tonnes par an. Le gaspillage se produit à chaque étape allant de la production jusqu’à la consommation des aliments en passant par la […]

Cet article Too Good To Go, une application pour lutter contre le gaspillage alimentaire est apparu en premier sur Veille cartographique 2.0.

12:09
Spot the 1 000 000 differences
sur Séries temporelles
After France monthly synthesis generated from Sentinel-2 data in July 2018, the monthly syntheses have become ... monthly. The new composite products for France from August 2018 are now available from Theia, using the WASP processor.

As a few days ago, we did a visualization of the mosaic at 20m resolution. You just need to click to on the links below to see them
- July 2018
- August 2018
But of course, we are interested in comparing the two. A very nice visualization was set-up by Michel Le Page, who also found the post title (Merci Michel !). Beware, do not go further if you have something urgent to do.

See it full screen

By comparing the two, you will see the evolution of the landscape, generally much dryer, with a lot of fields cropped, but this representation will also help you spot the composite artefacts. These are not very numerous, but you will see them :
- on some web browsers (firefox V58), geometrical differences appear even at a low resolution. Other browsers and versions do not have this defect. It is really not due to Sentinel-2 or Theia products
- above water and snow (we must work on this defect)
- where clouds have covered a place during the whole month of July or August. These pixels are flagged as invalid in the products (but not on the mosaic).
- where clouds or shadows were not properly detected by MAJA
- at the edges of Sentinel-2 swath (but the effect is really faint)
- some tile edges in July, due to the fact that Level 3A products were not all generated for the 15th of July, but for dates between the 8th and the 26th. This has been corrected for August.

5:08
ArcGis Pro 1.0 Tutorial English: 4 – Cartographic Views
sur Blog SIG & Territoires ---- Le blog SIG pour la gestion territoriale
In the previous chapter we have added a data layer to a map. We created this new map using the ribbon

But this button is a shared button, that is to say, by default if we click it will cause the creation of a map, but if we deploy the options, we can perform other operations. Which ones?

We will stop for a moment on this point to
understand the management of cartographic views (Maps) in ArcGis Pro.

The three types of cartographic views are familiar
to you. The map corresponds to the ArcMap
data window, the Scene corresponds to the ArcScene view and the Basemap to the
ArcMap map background.

If this is true and gives you a good idea of what and how to do in each one, let’s see how they
fit into ArcGis Pro and the differences with similars.

The maps

Map views are the windows in which you display your
spatial data. You can have as many map views as you
need in a single project, and you can open multiple views at the same time and view them side by side. This means that you can simultaneously view the
same data in 2D and 3D.

In ArcMap you only have one data view and even
though you can create multiple data blocks, only one can be active and
displayed. On the other side, each block of data
in ArcMap will be a separate map and you will be able to display them at the
same time, switch from one to another without any particular operation, and
link them so that they follow the movements of others, and so on.

You do not need to expand the map view. This is the usual view when working with ArcMap and
its operation is very similar. Where
it changes is on the other two types of view.

The 2D (Map) view can incorporate the third
dimension through outlines, shading, and profile view elements, but at the end,
it is limited in the amount of vertical information it can transmit.

The scenes

For cases where the vertical axis is important,
ArcGIS Pro includes the ability to tilt your map and see the 2D geometric
relationships in a three-dimensional scene. This
makes the data more understandable and helps to reveal new perspectives in the
process.

The 3D work can incorporate real elements into your
content, highlighting phenomena such as terrain undulations or the impact of
three-dimensional objects such as trees, buildings, or the subsurface geology. In addition, purely quantitative phenomena
(population, temperature, etc.) can often be communicated more effectively with
a 3D view.

In ArcGis Pro there are two types of scenes:
- the global scenes: they are compulsory in
  geographical coordinates (degrees), they take into account the curvature of the
  Earth. You will use a global scene for areas
  with a large extent.
- the local scenes: they are in a system of projected
  coordinates (meters), they do not take into account the curvature of the Earth. The study area is considered to be flat. You will use local scenes for areas of limited
  extent.
You create a scene in three different ways:
- adding an empty scene view to your project and
  loading data into it.
- by importing an ArcGlobe (.3dd) view into a global
  scene, or an ArcScene (.sxd) scene into a local view. The layers present in the original scenes are
  loaded into the new scene, with all of their settings.
- by converting a map into a scene. When you convert a map to a scene, the existing
  mapping remains unchanged, and the new scene is created in the project to represent
  the data in 3D. The scene has two blocks of layers:
  - a 3D block where the layers containing vertical
    information (Z) are placed in their structure
  - a 2d block where the data layers having no value for
    Z are placed in their structure. This
    data is automatically draped over the elevation reference layer of the scene.
Attention, a DTM in raster form, for example a TIF
file, whose pixel value is the altitude, will be loaded in the 2D block. It is up to you to manually pass it in the 3D block
by indicating where is the information for Z. A layer of lines XYZ (where you
defined a value of z in the definition of the structure of the layer) will be
loaded directly in the 3D block.

The base maps

A basemap serves as a reference and provides a
framework on which you overlay operational layers, tasks, and visualize
geographic information. The basemaps provide the context for
your work.

A basemap is built from multiple layers. Creating a basemap is the same as creating any
other map. What changes is that you can define
two types of layers in a basemap:
- the reference layers, which will be drawn over the
  layers of your other maps,
- the bottom layers, which will be drawn below the
  layers of your other maps.
The maps in your project will display their own
data layers, in between the baseline and baseline layers of your Map
Background.

Basic maps tend to be relatively static and in a
typical setting, are updated on an infrequent basis. In addition, base maps are often designed to be
used at multiple map scales, so the basemap depicts the appropriate content for
each range of map scales.

The Basemaps can contain raster functions, raster
or web layers. When you create a basemap in a
project, it can be used by other maps in a project using the Basemap Gallery.

Now that we have set the scene, we will take one by
one the types of map view and we will discuss a concrete example of
implementation.

24 septembre 2018
19:00
Mapping and data collect of vectors: how to prevent epidemics and new pests
sur Veille cartographie

Cet article Mapping and data collect of vectors: how to prevent epidemics and new pests est apparu en premier sur Veille cartographique 2.0.

Avia-GIS developed and released VECMAP software in September 2018. VECMAP combines data collect and mapping of disease vectors in order to provide relevant ways of handling pests.

Cet article Mapping and data collect of vectors: how to prevent epidemics and new pests est apparu en premier sur Veille cartographique 2.0.
19:00
STRAVA : Réseau social et Big Data
sur Veille cartographie

Cet article STRAVA : Réseau social et Big Data est apparu en premier sur Veille cartographique 2.0.

Strava, l’application très connue auprès des sportifs, n’est pas qu’une simple application GPS qui permet d’enregistrer son activité sportive quotidienne. Elle cache un jeu de données impressionnant grâce à ce qu’elle récolte auprès de ses athlètes. Un enjeu de Big data se dégage car l’entreprise publie chaque année le résumé des activités sportives sur son […]

Cet article STRAVA : Réseau social et Big Data est apparu en premier sur Veille cartographique 2.0.

5:14
ArcGis Pro 1.0 Tutorial English: 3- Adding Data to the Project
sur Blog SIG & Territoires ---- Le blog SIG pour la gestion territoriale
In the previous chapter we discussed ArcGis Pro’s Pane and View Project. You can compare the pane Project at the ArcMap’s ArcCatalog window, but better. In this chapter we will discuss how to use it in order to set up your project.
The moment has come to load data into our Maps window, which has remained so far desperately empty.
We are launching ArcGis Pro and as for the project type choice, we answer « Virgin Project ». And we have an ArcGis Pro window similar to this:

Maybe not quite like this, as the posted signs are
the last signs posted during your last working session. Since in the previous chapter we were working on
the project panel, it is displayed. If
this is not the case, display it with the VIEW -> Project -> Project
Window tab.

In order to add data, we need a map view. We will start by adding one
to the view window.
In the INSERTION tab of the  ribbon, click   New map

A map view is added:

You must have a map of France displayed by default. If it annoys you as much as it does to me, you can
remove this option by clicking on the tab   Project -> Options -> Map and Scene , then selecting the button   No   of   Map
background .

For the impatient

For those who want to go fast and load a layer of data immediately, it
is not at all complicated: In the tab   MAP  ribbon, click   Add data

The window   Browse opens.Point to the layer to load and click Open

The layer is loaded in the map

For those who want to follow the best practices for
ArcGis Pro

The central idea of ArcGis
Pro revolves around the Project, unlike ArcMap where it revolved around the
layout map (a document-> a layout). Here
the idea is to gather all the elements of a project and, eventually, package and
communicate them.

The problem with the expeditious approach we have
just explained is that nothing is added to our window   Project. If we bundle the project, of course, the loaded
layer will be packaged. But for the rest of the work we
deprive ourselves of some features.

If before loading the data directly, we open a connection to their
directory in the “records”,  this allows us to see at a glance the directories used by the project
(without going to explore the content window).

And once the connection is added:

Indeed, when you add an item to the project, ArcGis
Pro indexes the contents of that item automatically. At the top of the pane   Project , you have a search field. This search field works on all the elements loaded
in the project, but only on the loaded elements.

If before making our connection we would type “country*” in the research field, we would have no results.

Now that we have established this connection:

All the layers containing “country” appear in the result.

This is valid for all items of the project: models,
styles, data, etc. It works like the ArcMap search
window except that it is limited to the project elements and not to all those
accessible by the network. The
indexing is automatic, and it updates as additions, creation and modification
of items.
However, it can take quite a long time in a project
that you unpack.

What can be added to the project?

There are three main groups of elements:
- the data
- the items
- the services
The data

Regarding the data we will distinguish those found
in geodatabases and those that are in the form of files.

As for Geodatabases, do not forget that personal
geodatabases (.mdb) are no longer supported by ArcGis Pro at all. Only file geodatabases and SDE geodatabases are. If we take into account the three operations:
creation, display and editing in ArcGis Pro, we have:

The datatypes of geodatabases fully compatible with ArcGis Pro, where you can
achieve the three operations are:
- geodatabase feature classes
- raster mosaics
- the rasters
- the tables
- relationship classes
- the data Reviewer tables
The types of data that you can only display but you
cannot create or edit are:
- geometric networks
- network entity classes
- parcel fabrics
- topologies
There are two types of data that you can create but
not display (!): Feature datasets and terrain data, and two for which you cannot
do anything: geodatabase locators and schematics
datasets.

The file types fully compatible with ArcGis Pro, where you can do
all three operations (creation, display and editing) are:
- dbase IV tables (.dbf)
- raster functions (.air)
- LAS data (.lasd)
- raster files from the long list available on ArcGis
  help
- shapefiles (.shp)
- TIN files
The types of files you can only display but you cannot
create or edit are:
- DAO files (.dxf, .dwg, .dgn)
- text files (.csv, .txt)
Items

Items can be divided into two categories. The first is about items that you can add directly
to an ArcGis Pro project. The second concerns items that can be
added, but which are first imported.

The items you can add directly are:
- ArcGIS Server Connections (.ags)
- Data Reviewer batch job (.rbj)
- Connecting to a Data Reviewer Workspace (.gdb)
- Connecting to a corporate database (.sde)
- File Geodatabase (.gdb)
- Packaged layer file (.lpkx)
- ArcGis Pro Layer File (.lyrx)
- Layout file (.pagx)
- Locators (.loc)
- Map file (.mapx)
- Packed card (.mpkx)
- Styles (.stylx)
- Tasks (.esriTasks)
- Toolboxes (geodatabase, .pyt, .tbx)
- Connections to Workflow Manager databases (.jtc)
Except for connections, for other types of items,
you add a copy of the original to the project. If
you change something, it will not be reflected on the original.

Items that you can add but that are previously
imported to the new ArcGis Pro format are:
- ArcGlobe documents (.3dd)
- ArcScene documents (.sxd)
The import is loaded into a SCENE View
- ArcMap documents (.mxd)
- Map Packages (.mpk)
The import is loaded into a CARD View.
- ArcGis layer package (.lpk)
- ArcGis layer files (.lyr)
- ArcGis Styles (.style)
These files are converted to the new corresponding
ArcGis Pro format and loaded into the project.

ArcGis OnLine and Portal

Virtually all elements of ArcGis
Online and Portal can be viewed in ArcGis Pro, except for those that are
packaged. With regard to authoring and editing
capabilities, for the moment being, it is limited to ArcGis Online Feature
Layer and ArcGis Server Feature Services.

21 septembre 2018
19:00
Une cartographie interactive sur les conditions de vie des enfants
sur Veille cartographie

Cet article Une cartographie interactive sur les conditions de vie des enfants est apparu en premier sur Veille cartographique 2.0.

La Drees (Direction de la Recherche, des Etudes, de l’Evaluation et des Statistiques) a récemment mis en ligne une cartographie interactive sur les conditions de vie des enfants [1]. Ils ont réunis plus de 65 indicateurs sous 7 thématiques : Accueil des jeunes enfants Démographie Economie Education Logement Loisirs Santé Chaque indicateur peut être comparé […]

Cet article Une cartographie interactive sur les conditions de vie des enfants est apparu en premier sur Veille cartographique 2.0.

15:12
Things Maps
sur Carnet (neo)cartographique

A force de passer des journées entières à longueur d’année à regarder ou dessiner des cartes, certains cartographes finissent par voir des cartes partout. Bien qu’inquiétante, cette alteration oculaire est heureusement une maladie mentale bénigne. C’est même une chance. Car pour ceux qui savent bien regarder les détails du monde qui nous entoure, c’est la promesse d’un beau voyage fantasmagorique à chaque coin de rue. Une façon de rêver le monde au quotidien.

Parfois, une carte surgit en regardant au loin les nuages dans le ciel. Tantôt, la carte apparaît au coin d’une rue, lorsqu’on se promène les yeux collés sur le sol. Fissure dans un mur, tâche d’huile par terre, empreinte humide quelques heures après la pluie, craquelures dans le béton, ou tache sur la peau d’un fruit. Seul l’œil aiguisé du cartographe permet, à la manière d’un révélateur photo, de dévoiler les cartes qui se cachent derrière les « choses » du quotidien. Un œil alchimique qui permet de transformer une simple crevasse sur le macadam, en frontière entre deux pays.

Tous les moments de la journée sont d’ailleurs propices à la découvertes de ces paysages cartographiques fantasmés. On peut en voir dans une tache de graisse laissée sur une feuille de Sopalin après y avoir déposé un croissant le matin. Ou le midi, dans la mousse d’un expresso bien tassé à la fin du repas. Ou le soir, dans les plis sinueux des draps du lit au moment de se coucher.

Certes, tout cela ne sert pas vraiment à grand chose. Mais comme l’écrivait Barjavel, l’inutile et le superflu sont plus indispensables à l’homme que le nécessaire. Alors accordons-nous ces brefs moments de poésie et le droit de rêver un peu…

Beaucoup beaucoup d’autres exemples sur le
superbe blog de @JulesGrandin,
que je conseille vivement. [VOIR]

Nicolas Lambert
More Posts
Follow Me:

4:49
ArcGis Pro 1.0 Tutorial English: 2- the Project ArcGIS Pro PROJECTS
sur Blog SIG & Territoires ---- Le blog SIG pour la gestion territoriale
The ArcGIS Pro application lets you gather all the
resources you need to complete a project in one place. A project contains maps, layouts, server tasks and
connections, databases, toolboxes, folders, styles, and so on. It can also integrate content from your portal or
ArcGIS Online of your organization.

Projects can be created on your local file system
and shared online as a project package. These Online Projects can be downloaded to your
local station.

Project templates

Project Templates help you create a new project. For example, a template might include connections
to folders, databases, and servers; another
template can provide complete datasets or just references to external project
data …

Some basic templates are provided with ArcGIS Pro
to get you started: at startup ArcGis Pro offers you a Blank project, a Global
Scene project (worldwide 3D view), a Local Scene project (local 3D) and a Map
project (2D map). ).

How to manage the elements of a project

To manage the elements which constitute your
project, you have two windows: the Project Board window and the Project View window. As
their names indicate, the first is an arcgis pro pane, the second a View.

In the project pane and in the project view, you
can:
- Discover the GIS content of your local networks or
  portal.
- Browse and Search for layers to add to a map or
  analyze with a tool.
- Connect to servers and databases.
- Create and import maps, scenes and layouts.
- Describe your project and its elements.
- Manage elements of a style or geodatabase.
The pane and the view can be opened at the same
time. For example, you can edit symbols in
a custom style in the project view and add layers to a map using the project
pane.

The pane and the project view

The following overview shows how to access and the
contents of the project pane and the project view.
To move forward the presentation, left-click on it. To go back, right click.
To open the presentation in a new window of your
browser   click here

Project configuration options

We discussed the pane and the project view. But there are two other places where you can gain access to project
operations. The first is the tab   Project of the  ribbon

You then open the project configuration window.

Here you can create a new project, open an existing
project, save the current project or save it under another name. You configure Portal accesses, licenses, and
add-ins.

You also have the tab “options”   which allows you to configure the default options for your ArcGis Pro
projects. If you click on Options you open the configuration window

Models and project packages

Last place to manage projects, tab   SHARE   ribbon.

The templates allow you to define and configure   the
default items when opening a project. Items
are maps, layouts, server tasks and connections, databases, toolboxes, folders,
styles.

In a model we refer to data, but these are not an
integral part of the project, in the sense that they are not copied and
contained in the project file (.aprx). What
is saved in the project file is the address of this data.

In a Project Package (.ppkx) file you find the same
elements as in a template, but the data needed to run it is copied and
contained in the package file.

To create your own project template and add it to default templates when
you open ArcGis Pro, click the Project Template button, the model
definition pane opens.

You can also package your project by clicking on the Project Package button. The package pane opens.

To summarize, what must be remembered

You have 4 places related to your ArcGis Pro
Project
- The ribbon’s Project tab for opening, saving, and
  setting default project options
- The SHARE tab of the ribbon to create your own
  template or to package your project with its data
- The View and the PANE project to work concretely in
  it: search for data, add folders, toolboxes, etc.

20 septembre 2018
19:00
Digital Matatus : la cartographie des transports en commun collaboratif
sur Veille cartographie

Cet article Digital Matatus : la cartographie des transports en commun collaboratif est apparu en premier sur Veille cartographique 2.0.

Les Matatus, un mode de transport populaire informel L’usage des minibus collectifs est très répandu en Afrique, car il permet de connecter facilement les principales localités à leur réseau de villages et provinces éloigné. C’est le cas à Nairobi, capital du Kenya où ces minibus sont communément appelés « Matatu ». En effet, ce moyen de transport […]

Cet article Digital Matatus : la cartographie des transports en commun collaboratif est apparu en premier sur Veille cartographique 2.0.
18:21
Google dans la lutte contre le réchauffement climatique grâce à EIE
sur Veille cartographie

Cet article Google dans la lutte contre le réchauffement climatique grâce à EIE est apparu en premier sur Veille cartographique 2.0.

Dans un contexte où les États s’engagent à lutter contre le réchauffement climatique, sauf rares exceptions, Google a lancé le 10 septembre dernier son nouvel outil nommé « Environmental Insights Explorer » (EIE). On pourrait le traduire par l’explorateur des perspectives écologiques et il a pour vocation d’aider les villes à réduire leurs émissions en carbone. Pour […]

Cet article Google dans la lutte contre le réchauffement climatique grâce à EIE est apparu en premier sur Veille cartographique 2.0.
18:04
Drone de cartographie longue portée certifié s4
sur Veille cartographie

Cet article Drone de cartographie longue portée certifié s4 est apparu en premier sur Veille cartographique 2.0.

Le drone apparait de plus en plus comme un engin incontournable dans le monde de la géomatique. Aujourd’hui, nombreuses sont les entreprises publiques ou privées qui, pour la collecte de données géographiques, n’hésitent pas d’en faire usage. C’est dans cet élan que la Société AEROMAPPER a conçu l’AVEM qui, depuis quelques années reste l’un […]

Cet article Drone de cartographie longue portée certifié s4 est apparu en premier sur Veille cartographique 2.0.

4:52
ArcGis Pro 1.0 Tutorial English: 1- Interface Discovery
sur Blog SIG & Territoires ---- Le blog SIG pour la gestion territoriale

We will begin a series of tutorials for the new
application available with ArcGis 10.3, ArcGis Pro.

This first chapter is dedicated to the discovery of
the interface. What’s
up?Ribbon!

ArcGIS Pro uses a rectangular ribbon at the top of
the application to display and organize its features in a series of tabs.
The ribbon only shows the tools that are relevant to
the current task. Rather than taking up space on
the screen to display a series of toolbars-some of which you cannot even
use-the ribbon is contextual and updates to reflect current work opportunities.
In this way, ArcGIS Pro can provide a large number of
features in a simple way, without overwhelming you. When you have an open map, you simply see the commands that
work with maps. The ribbon tabs appear as you
need them, such as the specific tools for the raster layers that appear when
you work with this kind of data.

The ribbon helps you find and use commands directly and efficiently,
with a minimum number of mouse clicks and fewer trials and errors. The ribbon icons are large, which allows a quick location of
the desired tool. The ribbon also reduces the
number of dialog boxes that appear on the map and forces you to stop working.
You focus on your content while making the changes
interactively.

The
ribbon offers many possibilities of customization to simplify your
work. You can group the tools you use most often
and even share these changes with your colleagues. You can add or remove tools from the Ribbon or Quick
Access Toolbar, which is a small toolbar at the top of the application,
always visible.

quick
access bar

You can also add items to a gallery, or collection,
of tools, styles, or other items. Several tabs
have default galleries, and you can add your own favourites. For example, the analysis tab contains a gallery of commonly
used geoprocessing tools. When you have a tool
that you frequently use, you can add it to the Gallery so that you can access
and run it quickly. You can also use keyboard
shortcuts to access the ribbon buttons. If you
want to gain more display space, you can minimize the ribbon and, only, view it
when you need it.

Ribbon behaviour

Here
is the ribbon:

The Ribbon It consists of a series of tabs:

<

The tabs

And
from the current tab gallery:

The gallery

In
the tab we find buttons that execute a command:

A button of the gallery But also shared buttons, which execute the command like the normal buttons if we click on it, but which have a small arrow that rolls out a menu to select which command to launch by default with the button.

A shared
button

The Tabs

There is a series of tabs that are always present: Project,
Insertion, Analysis, View and Share

Next
to the first tab (Project) you will always have a tab corresponding to the type
of active window in the central window, the View window

The view
window

When you have an active map in the central window,
you will have a Map tab, while if you have an active Layout, the tab
will be Layout, or if you are doing a Layout Template Processing
you will have the ModelBuilder tab, etc.

Depending
on the context of the job, popup tabs are automatically added. They are recognizable
at first sight because they have a beige background

Contextual tabs

The View window

The
active view, which is your main window (the application’s work area),
determines the buttons that appear on each base tab, as well as the other tabs
that may be on the ribbon.
Each creation operation of a view adds a tab to the
view window.

View window
tabs

Click on a tab to activate this view. Ribbon elements are automatically updated to display the
tools for that type of view. For example, if you
have a map in the active view, you see a Map tab and tools for working
with map content, including navigation, labelling, and layer symbology. When you open a layout view, the Map tab is replaced
with a Page Layout tab containing commands that apply directly to the
layouts.
You can have multiple views open at the same time, i.e.
loaded in the viewport, but only one of them can be active at a given time.
You know which view is active by looking at which tab
is coloured blue. In the above image, the Map
view is active, while two other views are open (Layout and Model) but are not
active.

The panes

If you know ArcMap, at this point, you think that in
the end it will be easy to find the order we are looking for. If I told you that all the commands of ArcMap were inserted
in the ribbon and that at first glance you will be able to do what you want,
you will not believe me … and you are right!
At some point it must be complicated. And that’s what happens with the panels.

In
the following figure we see two: the Content panel and the Geoprocessing panel. The first corresponds
to the Arcmap legend window and the second to the Toolbox.

Interface
panes

And what complicates (a bit) the task is that panes
are full!
Let’s be honest: compared to ArcMap it’s much better,
it’s more “logic”, but we still cannot say it’s
intuitive. It will still happen to get lost in
the meandering panes, tabs at the bottom of the pane…

Open
panes can be reduced “Pined”, on the edge of the interface and reopened with a
single click.

Reduced
panes

Reorganization of
the interface

You can organize the shutters and views as desired
to help you enlarge your work area and reduce clutter. The top corner of each shutter has a pin that allows you to
freeze the pane at that location or hide it automatically. A pane that has been minimized appears along the side of the
window with its name. After developing a smaller
pane, it will be automatically reduced again when you click on another place
outside the pane.

To move a pane to a new location, drag its title
bar. When you do this, blue arrows appear,
representing the different locations where the pane can be docked, including
stacked on the other panes or views. Place it on
a blue target to get a preview of where the pane will be installed, if you drop
it there. If you want the pane to become
floating above the other elements, release the mouse button outside the blue
targets. If you have two open views, such as two
maps or a map and a layout, you can anchor them to see them side-by-side.

We have discussed the interface. We can now start loading our data … in the next chapter.

19 septembre 2018
19:00
L’apport de la télédétection en archéologie
sur Veille cartographie

Cet article L’apport de la télédétection en archéologie est apparu en premier sur Veille cartographique 2.0.

Avec les technologies actuelles, l’archéologie peut économiser des centaines voir des milliers d’heures de recherches souvent vaines. Cela entraîne souvent des dépenses démesurées pour trouver un site souvent difficile d’accès, voir pour seulement confirmer une hypothèse. Aujourd’hui, avec les images satellites et l’évolution de la télédétection, des forts romains ont pu être découverts dans la […]

Cet article L’apport de la télédétection en archéologie est apparu en premier sur Veille cartographique 2.0.
18:42
GPS : Les animaux domestiques à la pointe de la technologie
sur Veille cartographie

Cet article GPS : Les animaux domestiques à la pointe de la technologie est apparu en premier sur Veille cartographique 2.0.

Nous avons tous une manière de vivre dans notre milieu, fait d’interactions, d’obligations et de mobilités. Nos animaux aussi ont une vie à l’extérieur de la maison et doivent également s’intégrer dans leur environnement. Quel maître ne sait jamais interrogé sur les longues heures d’absences de son animal ? Alors que nous vaquons à nos occupations […]

Cet article GPS : Les animaux domestiques à la pointe de la technologie est apparu en premier sur Veille cartographique 2.0.

2:55
Terrain Tools for ArcGis 10.3 and ArcGis Pro
sur Blog SIG & Territoires ---- Le blog SIG pour la gestion territoriale

Standard techniques for representing the terrain,
such as shading, are sufficient for many applications, but with Terrain Tools you
can represent the
terrain under different lighting conditions, or use
more artistic techniques. This set of tools complete
or extend what you find in the default
software. These techniques are often difficult to find
or to put into work. The Terrain Tools
project brings together some of these ideas in a toolkit which provides the features
to create alternative representations of the terrain with
ArcGIS.

The Terrain Tools are included in a toolbox to be
used either with ArcGIS Desktop 10.3 or ArcGIS
Pro 1.0.

To download Terrain Tools, follow this link: https://www.arcgis.com/home/item.html?id=4b2ea7c5f87d476a8849c804b81667aa

Once installed, the toolbox
contains the following tools:

Here is a short explanation of each tool.

Multidirectional
oblique
weighted
Shading (MDOW)

This technique applies an oblique lighting on all surfaces by using four light sources
unlike classical shading where only one is used.
It allows to highlight more details.

Once
the four different
shadings are created (one
per light source) they are mathematically weighted and added
to create the final shading.

Swiss Shading

This style of shading combines many types of shading in one output with yellow-
blue tones.

Grey
shading (as those created by the Default
shading tool) is combined with yellow lively shading on the slopes sunny
and blue-grey tones in less bright areas. Blue simulates
atmospheric haze and provides the possibility of blue
pale shadows to colour the valleys, flat terrains and uneven
regions. Colour yellow gives the impression of warmer colours in the sunny slopes.

The Swiss shading model combines a set of tools by chaining them.
From the MNT original two new layers are created (one
for blues, the other for yellows). The original
DTM and the two new rasters are then combined to create the final shading.

Shading
by
segmentation (hillshade cluster)

Most shading techniques fail to reproduce local
variations. For example, shading can generate areas without slight
differences, especially when the light source
is parallel to the
mountain peaks.

The shading by segmentation technique ensures that
slight differences in shading throughout the
scene are obvious.

Clustering is a
technique that allows the division of a
data set into homogeneous subsets. The objective
is to create subsets of a variable that are most
similar within the subset and, at the same time, the most different possible between subsets.

The classic algorithm to solve this problem,
sometimes called k-
means method, is very much used and is considered to
be effective although does
not guarantee optimality,
nor a limited calculation time.

The process starts at random by selecting a series of centroids and assigns each element of the data set
to the nearest gravity centre. Then, by successive
iterations, recalculates the centroids and
reallocates the cluster members, until the degree of similarity is maximal within clusters and
minimum among them.

You will find a suite of three tools that uses the k- mean method to create
a continuous change of
local lighting conditions and produces a final shading: the original classic
method, a modification of this method for heights,
and another modification for the slope.

Classic
segmentation
shading

This is the original method described above. Its problem
is that does not put in
evidence the terrain structures considered less important, such as valleys.

Modified
segmentation
shading
for
heights

In
both additional methods, the light is placed perpendicular to the terrain,
resulting in darker areas when the slope is steep while illuminating
the valleys and mountainous ridges. The modified
method for the heights emphasizes the lighting
changes with altitude. The modified method for
slopes emphasizes the slope as the element to be illuminated.
These are changes to the segmentation method by
default and transform the weight of elevation
and. Weights are
used to continuously correct the values of Zenith
in the landscape . The
results give white brilliant tones for the valleys.
The modified method for heights gives tones gradually darker with
increased altitude what improves the sharpness of the peaks.

Modified
segmentation
shading
for
slopes

The
modified segmentation technique for slopes results, also, in
white bright tones for valleys and channels and
darker tones for steep slopes such as rocky bassets.

Sky models

All the shading models we have discussed up till now
use, only, one lighting source to derive a final
shading by combination of a certain number of shading
intermediaries.

But in reality the
light does not illuminate the world this way. Illumination
takes place from every angle, but with varying intensity and under different atmospheric conditions. A landscape will be different on a sunny day or a cloudy day. Likewise it
will be different in the early morning or late afternoon versus
midday when the sun is perpendicular.

This method uses an
external program ( SkyLuminance.exe) , supplied with the Terrain Tools, to
calculate a file with the lighting parameters.

The
program builds a dome with a very large
number of lighting sources:

The result of this method
will depend on the number of light sources and the type
of lighting (clear sky, cloudy , etc. )

The
following image shows the result with 200 lighting points per sky covered:

Dotted
Traditional

This method creates and symbolizes the contours with a “traditional” dotted
symbol while changing
the overall appearance by removing contours for surfaces with slopes of less than 5 °

Contour
filling

This tool creates contours by generating a layer of polygons where the space between the isolines is colour filled.

Illuminated
contours
(Tanaka)

This method applies a north-west
light source to a contour map. The result
is a 3D style representation of the terrain. The method involves changing
the width and colour of the contour lines based on their position relative to
the light source: The contour lines that face the light source are drawn white while those found
in the shadow are traced in black; the lines perpendicular to the light source are drawn thinner than the parallels.
In summary, this method gives a very realistic shadow
effect to terrain maps and allows the viewer to
better understand the features of the landscape.

Hatching

A classic cartographic technique to represent the topography in
three dimensions on a map is the use of
hatching. Hatching is drawn following the direction of the steepest slope. Hatching a territory creates tonal
variations on the whole map. These tonal
variations are a
shading technique to represent the topography in three dimensions.

The tool generates
a layer of dots that are
represented by a hatched symbol. The symbol is given a size
proportional to the slope and oriented according to it.

The
problem of this method is that the generation
of the layer of points is done with a default
scale of 1:36 000. If you want to represent
a territory with a
different scale, it gets very complicated to adapt the
result in order to get a correct representation. In any event,
the Terrain Toolbox method only applies for scales
between 1:10 000 and 1: 150 000.

Shadow Lines

This
type of hatching is an artistic drawing method
that uses lines of
varying thickness and orientation to produce shading variations. Two light
sources (azimuths 315 and 360) are applied with angles of incidence between 5
and 30 ° above the horizon line. For each
of them the schema lines
are calculated as follows:

The thickness of the lines produced depends on the number
of inclinations « in the shade ».

The
result is the following:

Chroma Stereoscopic Colors

A
technique that codes the elevation values in colours which viewed through special glasses, gives a 3D holographic view of the data.

3D choropleths

This method is not used for
field data, but is useful to give “relief” to layers of polygons, usually statistics,
creating a shadow scope proportional to a value.

18 septembre 2018
21:03
La couverture de la France en très haut débit d’ici 2022, Où en somme nous?
sur Veille cartographie

Cet article La couverture de la France en très haut débit d’ici 2022, Où en somme nous? est apparu en premier sur Veille cartographique 2.0.

Depuis 2013, le gouvernement a lancé le plan France Très Haut débit ayant pour objectif de couvrir l’intégralité du territoire français en très haut débit d’ici 2022. Ce chantier pharaonique mobilise un investissement de 20 milliards d’euros en neuf ans, partagé entre les collectivités territoriales, l’État et les opérateurs privés. Pourtant, à bientôt 3 ans […]

Cet article La couverture de la France en très haut débit d’ici 2022, Où en somme nous? est apparu en premier sur Veille cartographique 2.0.
18:30
Les glissements de terrain anticipés par GM et GDAL
sur Veille cartographie

Cet article Les glissements de terrain anticipés par GM et GDAL est apparu en premier sur Veille cartographique 2.0.

Global Mapper et la bibliothèque GDAL ne pourraient-ils pas permettre d’anticiper les glissements de terrain ? Le tremblement de terre du jeudi 6 septembre 2018 survenue sur l’ile d’Hokkaido provoquant d’importants glissements de terrain et causant la mort de 44 personnes et de 650 blessés nous pose évidemment ces questions. « Serait-il possible de réduire […]

Cet article Les glissements de terrain anticipés par GM et GDAL est apparu en premier sur Veille cartographique 2.0.
18:30
Du planisphère au globe, Google Maps se refait une beauté avec la 3D
sur Veille cartographie

Cet article Du planisphère au globe, Google Maps se refait une beauté avec la 3D est apparu en premier sur Veille cartographique 2.0.

Qualifiée de « révolution » (France Info, 2018) ou de « changement nécessaire » (Numerama, 2018), une des mises à jour du service de cartographie en ligne Google Maps (version Desktop) de cet été s’est faite discrète. Pourtant, elle bouleverse la vision que l’on a sur notre monde et qu’elle véhicule depuis 2004. Depuis le début du mois d’août, […]

Cet article Du planisphère au globe, Google Maps se refait une beauté avec la 3D est apparu en premier sur Veille cartographique 2.0.

5:59
How to track changes in a geodatabase under ArcGis
sur Blog SIG & Territoires ---- Le blog SIG pour la gestion territoriale
From the moment you are not any longer alone to manage data, it is
important to be able to track data changes: who did what and when?

If you work with geodatabases enterprise you know that you have at your
disposal the versioning as well as archiving options to perform this task ,
provided you count with a Standard or Advanced license .

We will address the available tool with ArcGis 10.2 and above in Basic
version to perform this task in personal geodatabases and file: tracking publisher.

Compared to the archiving tools, the great difference is that the
publisher tracking only keeps track of the records changes present. If you delete
records, there is no trace of who performed the transaction or when.

What it has in common is the storage of the user name and the date and
time updates records in the geodatabase.

Let’s first discuss what it is the editor tracking

The tracking editor

With the tracking editor, ArcGIS saves automatically the following information
for each entity or table record in a geodatabase dataset :
- Username that created the entity or the
  record
- Date and time of creation
- Username that performed the update.
- Date and time of the last update.
This information is recorded in the attribute fields directly in the
data set. For example, you can track the last user who has edited an entity, as
well as the date of the last update. At any time you can see who the person
responsible for changing the display in course of the database is.

In order to research the volume of updates made over time, you can also
follow the date of the last update and creation date. It can be useful to
identify trends and make correlations with the date.

Tracking updates works when the elements of the Geodatabases
personal, geodatabases file, and geodatabases
ArcSDE are modified in ArcGIS for Desktop. In
addition, you can also track updates performed on the data released as entities
services in ArcGIS Server.

Let’s discuss now how to put in place the tracking.

How to activate the publisher tracker.

You have three ways to put in place the publisher tracker.

1-With the default settings.

The fastest way to enable the editor tracker consists
in using predefined settings. Right click on a dataset, tick Manage,
and then click EnableTrackingpublisher.

A message appears listing the fields that will be added to the dataset.

By clicking OK you can create the default fields. CVeux appears at once in the attribute table of the tracked layer.

2-With a customization of the tracking fields.

To enable the tracking publisher with your own field names or to record the
hours in the database time, use the Properties dialog box of the
dataset.

You must create tracking fields in the table, before enabling the
publisher tracking. For the username fields, create Text type fields. To update
the date fields, create Date type fields.

To use the Properties dialog box
of the class entity or properties of the table,right click the
class set entity in the Catalogue window , and then select properties in
the context menu . Click on the tab Followedpublisher
and tick EnableTrackingpublisher

Define the fields that will be updated when creating or modifying an entity.

Keep in mind that fields must exist previously. If this is not the case, you can click on the tab Fields to define a new field before activating the publisher tracking.

Finally, specify if the dates will be recorded as UTC time or in
database time.

If you choose UTC, you can avoid a later problem. If you choose database
time (Local time) you will face a few problems if you try to use the table or
layer for the WEB. Use UTC whenever possible.

The table appears as follows:

<

3- With the Toolbox tools

The tool Enable Tracking editor
allows adding new fields and activating the editor on these fields simultaneously.

To use the geoprocessing tool, open the tool EnableTrackingeditor in the toolset Data ManagementTools-> Controls. Define the fields and others
settings to your convenience. If these fields are missing, check the option Addfieldsif theydonotexist
to create the tool execution.

Operation of the tracking publisher

You have two available paths:
- tracking changes
- tracking creations
Whenever you change a record cell, the username,
the date and the time are registered in the two fields provided for the
modifications.

In the case of the geodatabases file and personal updates with ArcGIS
for Desktop clients and geodatabases ArcSDE which you connect when
authenticating with the operational system, the username recorded matches the operational
system identifier. The value used is defined by the text entered by the user
when connecting.

Every time you create an entity, the username, the
date and time are registered in both fields provided for creations as well as
for modifications. A creation is also a modification. So we will have the same
date and time for the creation and modification. However, if you fill in the
attributes of the entity at its creation, it will be the date and time of the
last modification (the last attribute entered ) that will appear as date and
time of last modification

How to disable the Tracking publisher.

You have the option to disable the tracking editor with the following three
activation procedures: the menu in the Catalogue window, the dataset properties
or the execution of the Disable tracking publisher tool.

To use the Catalogue window, click the right button on the set of data, check
Manage, and then select Disable tracking
publisher.

To use the Class Properties dialog box entity or Properties Table, click
the right button on the class game entity in the Catalogue window then
select properties in the context menu . Click on the tab Followed
publisher. To turn off the monitoring editor for a given field at
a given time, click the type of monitoring publisher, for example author or the
creation date, and set it to < None >. To disable completely the tracking
publisher, uncheck Enable Tracking publisher
.

To use the geoprocessing tool, open the tool Disable tracking
editor in the toolset Data Management
Tools -> Controls. Check the types of monitoring
publisher that you want disable . When all types are checked to be disabled,
tracking editor is completely disabled.

Disabling the Tracking does not erase the
tracking fields or their latest content.

0:06
Dozens of landslides after the 2018 Hokkaido earthquake
sur Séries temporelles

An earthquake with magnitude 6.7 occurred on 06 Sep 2018 in Hokkaido, Japan, killing at least 17 people and leaving nearly 3 million households in Hokkaido without electricity.

The quake came two days after typhoon Jebi, "the strongest storm of 25 years".

Below is an image comparison near Atsuma dam lake in the south of Hokkaido, before and after the earthquake, showing multiple landslides in the forest areas. Both images were acquired by Sentinel-2 and are shown as false color composites of bands 11-8-2. Click here to view a larger version.

The heavy rainfalls brought by typhoon Jebi probably explain why the earthquake triggered so many landslides. I would like to count the landslides in this area, but the Sep 15 image is not yet available in my favorite image processing engine. I will check later.

Earthquake triggers landslides in Hokkaido, Japan – in pictures [https:]]

— The Guardian (@guardian) September 6, 2018

Links:
- in the AGU landslide blog
- Google published a crisis map but it seems that the imagery is not publicly available

Thanks to Laurent Longuevergne for letting me know about this!

17 septembre 2018
19:03
Global Hip Hop : une cartographie du rap dans le monde
sur Veille cartographie

Cet article Global Hip Hop : une cartographie du rap dans le monde est apparu en premier sur Veille cartographique 2.0.

Qu’est ce que Global Hip Hop ? Fin juin 2018, deux infographistes français de GoumProd ont développé un globe interactif où archiver les artistes phares du hip hop et leurs hits selon leur provenance géographique et la date de sortie du morceau. Quelques clics vous font passer de la G-funk de Snoop Dogg et […]

Cet article Global Hip Hop : une cartographie du rap dans le monde est apparu en premier sur Veille cartographique 2.0.
19:02
OpenTouristMap : Un développement durable de l’information touristique
sur Veille cartographie

Cet article OpenTouristMap : Un développement durable de l’information touristique est apparu en premier sur Veille cartographique 2.0.

C’est dans un contexte économique et sociétal en constante évolution que les professionnels du tourisme doivent anticiper, s’adapter et innover. C’est pour ces raisons que la Région Nouvelle-Aquitaine souhaite promouvoir les démarches d’innovation, encourager les initiatives collaboratives et intégrer l’usage comme facteur de réussite des projets innovants. Ainsi l’appel à projets « Tourisme Innovant en Nouvelle-Aquitaine » […]

Cet article OpenTouristMap : Un développement durable de l’information touristique est apparu en premier sur Veille cartographique 2.0.
15:38
La carte devient un outil de prévention du risque de l’ouragan Florence
sur Veille cartographie

Cet article La carte devient un outil de prévention du risque de l’ouragan Florence est apparu en premier sur Veille cartographique 2.0.

La tempête tropicale, l’ouragan florence L’ouragan Florence est le 6ème cyclone tropical nommé de la saison cyclonique 2018 dans l’océan Atlantique Nord. C’est le premier ouragan majeur apparu le 31 août 2018. Ce phénomène s’est formé à partir d’une onde tropicale associée à des orages désorganisés en Afrique de l’ouest. Ensuite, il s’est rapidement transformé en tempête […]

Cet article La carte devient un outil de prévention du risque de l’ouragan Florence est apparu en premier sur Veille cartographique 2.0.

11:57
Nouveau sur le site : Fiches d'aide à QGIS 3.2
sur Sigea : actualités

Retrouvez la dernière version des fiches d'aide à l'utilisation de QGIS à l'adresse suivante :

http://sigea.educagri.fr/tutoriels-de-logiciels-sig/tutoriels-qgis.html

3:46
The new field calculator in ArcGis Pro
sur Blog SIG & Territoires ---- Le blog SIG pour la gestion territoriale

One of the most common tools for data management is the famous ArcGIS Field Calculator. When you are on a tabular view, by right- clicking on the field name (column), you find the option “Field Calculator” which opens the famous calculator:

Similarly ArcGis Pro performs the same operation and opens the field calculator window:

At first glance it looks like it’s the same thing,
with a modification in the setting up. But,
there’s more than that.

Goodbye
ArcMap
calculator,
welcome
Toolbox Calculator

But on the contrary, this is not the same calculator as
the one retrieved by the attribute table.
In ArcMap you have
an interactive
calculator called ArcMap or ArcCatalog, and a “batch” calculator
that you can use, indirectly, for models
treatment, or directly, from the Toolbox.

In ArcGis Pro, it’s this
second use that is retrieved from the table.

In theory, now it’s
easier since you only have one working mode. On
the other side, there are some small details to keep in mind. The first,
and rather important, is that unlike your ArcMap
calculator, since the new one is part of the geprocessor, it abides by
the environmental parameters. Particularly, if
you have a defined treatment range, the
calculation will, only, be performed on those records that are within this
range. The rest of the records will not be calculated.

To change the environment parameters, you must click on “Environments” at the
top of the window.

Goodbye VB,
welcome
Python

In the ArcMap calculator you have, at the top of the window, two buttons that allow you to
choose the language used to write complex
expressions in the calculator . You have the choice between Script VB and Python. With ArcGis Pro, more buttons, more choices. Or you can try with Python, but…
!

Made public many times
and started in stages
for a few years, the abandonment of VB by ESRI has been completed with the introduction of ArcGis Pro.

If you had stored calculations in VB, you
must have quitted and rewrite them in Python.

On the other side, Python is a real plus regarding the calculator
possibilities. Just as much in VB you were limited to ongoing
registration, now you have functions such as auto
increment ( ) that generates a sequential
identifier; accumulate (), which calculates the accumulated values of a column (each line is the result of the sum
of its value plus the value of the previous line),
percentIncrease () which is similar but stores the percentage in relation to the previous line.

Another interesting feature is that
Python works on the attributes area and length, but by changing the default units.
You can to have areas in square
meters and perform the
calculations in km², etc…

Regarding the length calculations, especially for users of the Lambert 93 projection (not the
CC) you can calculate the geodesic lengths
instead of flat lengths. This prevents lengths miscalculations with Lambert 93.

Besides, Python expressions can use geometric
properties such as:
type, range, centroid, firstPoint, lastPoint, area, length, isMultipart and
partCount (eg shape.area!).

Getting
started with
the new calculator

What is absolutely
needed to know before getting started, is that the field names are now delimited by exclamation marks:
!fieldname!

Another little detail is that when you double-click the field name as before, it is copied in the
calculation window. On the other side, if
you want to replace a
field that is already in the calculation window, you had to select it in
advance, and then double-click the name of the
new field. This no longer works. Instead, you have to clear the
field in the calculation window since the double click only adds a field name, it does not replace the selection.

Here we cannot cover a
full Python course. There are quite a few in the web.
On the right ArcGis Pro field calculator window
(Helpers) lists the main available functions.

By alphabetical order hazard, you find as first “Helper”, the function conjugate (
). If you believe you can start inspecting what Python
does with this function, you are selecting
the worst departure !

Conjugate ( ), as imag
(), real () are functions to work with imaginary numbers! Sincerely, I doubt that this
is your case.

For start, take a look to the strings functions (capitalize,
rstrip, replace), mathematical functions (math. *) and especially, at the very
bottom of the list, the new functions we have discussed (accumulate, percentage, etc.).

Lastly, before getting started, if you are not familiar with Python
and you set going on your own, remember that, in
Python, the lines comply an indentation. When you have scripts on several
lines, starting by clicking two spaces or no space,
everything changes!
12 septembre 2018
22:20
Arcmap: A Python script to geocode addresses with OpenStreetMap
sur Blog SIG & Territoires ---- Le blog SIG pour la gestion territoriale
At a time when QGis allows a free, unlimited and easy-to-use addresses geocoding
(see the article Geocodages of addresses with QGis 2.8 ), the
geocoding with ArcGis gets caught up in credits, API keys and others artifices
to charge and complicate to obtain the same
result. Fortunately some doors cannot be locked and there are still ways to do
it without necessarily passing by the checkout. Here is a small Python script
that allows you to geocode an address file with OpenStreetMap from ArcMap.

We owe the basis of this script to Riccardo . To geocode an address file, ie to take
a record with the address of a point and convert it to a point in a shape, we
need:

1- the geopy module of Python

2-a text file with addresses to geocode

3-the ArcMap toolbox

How to install the geopy module

To download the latest version updated the day of this article, click here

For an updated version, go to the Python Repository homepage: https://pypi.python.org/packages , search for
geopy with the search window, and download the latest geopy version available in
source version (not in Python wheel).

Unzip the downloaded file and search for a geopy
directory (without other characters):

Copy this directory to the ArcGis Python directory. In theory, it is located on your C drive, directory Python27-> ArcGis10.X-> Lib

You have installed the geopy module.

Preparation of the address file

The geocoding will be executed by a web service, in our case the OpenStreetMaps
Nominatim service. You need to format your data if you want the web service to
understand what you want. Therefore we will minimally configure the addresses.

To get started, if you have not already loaded your addresses into a spreadsheet,
do it! You must have at least two columns:
- in the first you will put the
  address (number, street, …)
- in the second you will put the
  zip code and the city or town
The first row of the table must contain the names field. Avoid any
special characters, white, etc.

For our two fields, let’s suppose we name them address and
city

You can have more fields, but for the time being
we will only use these two fields.

Now you must save the table as a text file. You have several text
formats suggested by the spreadsheets. In the case of Excel, choose text
separator tabs. By doing this, you will choose not only the field
separator but also the encoding type of the file. The encoding, as its name
suggests, are the ascii codes. If you have Notepad, you can see the encoding of
the file. In this case you will see encoding: ANSI.

If you do not follow these instructions, you may have a script crash in
Arcmap. You will need either to modify the script so that it corresponds to the
encoding of your file, or to return to the file and encode it using ANSI
(Latin-1).

The address file and ready to be geocoded.

The Python script

The script proposed here does not pretend to be a finished tool. There
are many aspects that are not taken into account. If this is enough for you,
good! If not, it will be useful as a basis to be modified and adapted for your
particular case.

You can download here a toolbox containing the script as well as the
sample text file.

geocoding

Remember to configure the toolbox script path to the provided .py file.

Operation

For the script to work, we need the address file (built above), as well
as an empty point shape.

We could create the shape in the script but in the current situation,
you have to create a point shape, with the WGS84 geographic coordinate system,
and a text field named Name where will be stored the address
contained in the record of the text file. Allow enough field length (100?) to
hold this address.

Except miracle, every time we geocode an address file, there are
addresses that are not found by the geocoding service. These addresses are put
in an output text file.

By launching the script you will have the
following configuration window:

<

Shapesor is the points shapefile where you
will retrieve geocoded addresses

address file is the text file containing the addresses

address is the name of the address field containing the
address (number, street, …)

city is the name of the address field that contains the
postal code and the city

file errors is the name of the file where will be put the
addresses which will not have been geocoded.

Script content

Here is the whole script:

arcpy import
import geopy
import csv
from geopy.geocoders import Nominatim
geolocator = Nominatim ()

failed_text = « «

numbers_failed = 0
outShp = arcpy.GetParameterAsText (0)
infc = arcpy.GetParameterAsText (1)
outFC = arcpy.GetParameterAsText (4)
address = arcpy.GetParameterAsText (2)
arcpy.GetParameterAsText place = (3)
cursor = arcpy.InsertCursor (outShp)
with open (outFC, ‘w’) as file:
with open (inFC, ‘rb’) as csvfile:
content = csv.DictReader
(csvfile, delimiter = ‘\ t’)
for row in content:
feature =
cursor.newRow ()
vertex =
arcpy.CreateObject (« Point « )

coord =
geolocator.geocode (row [address] .decode (‘latin1’) + row [place] .decode
(‘latin1’), timeout = 25)

if coord is None:

failed_text + = row [address] + row [place] + « \not
«

numbers_failed + = 1

if coord is
not None:

vertex.X = coordinate.longitude

vertex.Y = coord.latitude

= vertex feature.shape

feature.Nom = row [address]

cursor.insertRow (feature)

file.write (failed_text)
file.close ()
del cursor
print « failed geocodes: »+ Str
(numbers_failed) +« !!! check the file
»+ OutFC

dataframe = arcpy.mapping.ListDataFrames
(arcpy.mapping.MapDocument (‘current’)) [0]
geocodelayer = arcpy.mapping.Layer (outShp)
arcpy.mapping.AddLayer (dataframe, geocodelayer, « BOTTOM
« )
layer_extent = geocodelayer.getExtent ()
dataframe.extent = layer_extent

Now let’s see the different parts.

First of all, we have the choice of the geolocator:

from geopy.geocoders import Nominatim
geolocator = Nominatim ()

If you want to use another geocoding service, this is the moment to
choose it. Remember that some services require an API key, a username, a
password. In these cases it will be necessary to add the adequate code to
initialize the connection.

Secondly, we have recovery of the parameters provided in the script configuration
window:

outShp = arcpy.GetParameterAsText (0)
infc = arcpy.GetParameterAsText (1)
outFC = arcpy.GetParameterAsText (4)
address = arcpy.GetParameterAsText (2)
arcpy.GetParameterAsText place = (3)

You can edit the script for more setting
options, such as the separator used in the address file. In this case you must
add the parameter in the script configuration: right click on the script in the
toolbox window -> Properties -> Settings tab

and add a code line with a variable name as well as the parameter index:

spacer = arcpy.GetParameterAsText (6)

Line:

cursor = arcpy.InsertCursor (outShp)

set up a cursor on the shape file that allows the insertion of the
points of the found addresses.

Line :

content = csv.DictReader (csvfile, delimiter
= ‘\ t’)

uses the csv Python module to read the contents of the address file into
a content variable . The delimiter = ‘\ t’ option indicates
the module that the field separator is the tab. If you use another separator
(which I do not recommend), this is where you should indicate it.

feature = cursor.newRow ()
vertex = arcpy.CreateObject (« Point
« )

correspond to the creation of a new point type entity in the output
shapefile.

The geocoding call uses the address and place variables
that correspond to the address and city fields of the script
parameters.

coord = geolocator.geocode (row [address] .decode
(‘latin1’) + row [place] .decode (‘latin1’), timeout = 25)

Depending on the encoding of the text file, you may need to change
‘latin-1’. You have multiple possibilities, but the most common are ‘utf-8’ and
‘UTF-16LE’.

If the return of geocoding (coord) is empty, write the address in the
error file and if it is not empty, create the point in the shapefile.

if coord is None:
failed_text + = row [address] + row [place] + «
\not «

numbers_failed + = 1

if coord is not None:

vertex.X = coordinate.longitude
vertex.Y = coord.latitude

= vertex feature.shape

feature.Nom = row [address]
cursor.insertRow (feature)

feature.Name is the Name field created in the
shapefile at the start of the process. If you call the field other than Name
this line must be modified.

The end of the script loads the shapefile into the active ArcMap
document.

The final result of the order is as follows:
21:53
Geotag and import photos replace photo2shape in QGis
sur Blog SIG & Territoires ---- Le blog SIG pour la gestion territoriale
This article is an update of a previous one, “Integrate geolocated photos in QGis with Photo2shape” . In fact, the
photo2shape plugin is no longer maintained and poses a lot of problems. We will
perform the same operations with the new plugin “Geotag and import
photos”.

In this article we will discuss how to create a layer of points in QGis including
positions and links to “geotagged” photos. Therefore, we will use the QGis
Photo2Shape plugin.

Introduction

Geotagging consists of specifying the geographic coordinates of
photos by changing their EXIF data (or tags). EXIF (Exchangeable
image file format) data of a photo includes different information such as the
type of camera, the date and time of the shooting etc…

If you have a camera equipped with a GPS, the location data can be included
automatically. For example, if you have an iPhone you can enable geotagging
pictures (see how to enable in the following page: How to turn photo geotagging on or off on your iPhone or iPad).

If you do not, instead of using some software such as Locr GPS Photo (free)
or Robogeo (charged) to include a location in your pictures, you can use this new
plugin (options geotag photos and photo tag).

Installing the Geotag and import photos plugin

The old photo2shape plugin used an additional Python module,
ExifRead. Geotag and import photos uses an executable
external to QGis to handle the EXIF format. This executable, ExifTool,
is free and royalty free for all platforms.

You can download the latest version at http://www.sno.phy.queensu.ca/~phil/exiftool/

In Windows, once you have compressed the downloaded file, unzip it in a permanent
directory and rename the file in exiftool.exe.

You will have to tell the plugin the location of this executable.

To install the plugin in QGis, open the menu Extensions
-> Install /Manageextensions

Make sure that the experimental extensions are displayed. If this is not
the case, you will not find the plugin to be installed.

Select All and go through the list to find “Geotag
and import photos”. Click on the line to select it and click the Install
Extension button.

Close the window. You have now a new menu line
under Vector:

Click Settings and fill in the first line with the location where you have placed exiftools.exe

Leave the second line empty. The installation and plugin configuration
is completed.

Loading photos in QGis

Let’s suppose you use an iPhone or equivalent. The images integration
procedure in QGis is extremely simple.

1- copy your images in a directory. With the Windows Photo Viewer, for example,
make sure that the photos are correctly positioned. Since you will link the photos
to the layer created, the photos will be viewed directly with QGis. Therefore,
it is essential that they are stored in the right place.

2-Start the creation of a shapefile corresponding
to the geotags of your photos with the plugin Geotag and import photos: menu Vector
-> Geotag and import photos -> Import photos

Fill in the directory where you have your photos. Select the tags to be taken
into account (Here we have chosen Select all). For each tag, the
plugin will create a column in the table of the output shape which will be filled
with the value found for each photo.

Enter the location and name for the output shapefile.

Click OK and if you have checked the Add
result to canvas, you will see the points corresponding to the photos

If you open the corresponding table you see the fields that have been created.

The most important part is the field that contains the directory and
image file name because this is what we will be using to display images in
QGis. The name of this field is by default, filepath.

Viewing photos in QGis

To view pictures automatically when moving the mouse over a point of the
shape, we will use the tooltips.
- Open the context menu of the created shape layer.
- Select item tooltips
- Select HTML
click on Insertanexpression
- In the Expression window type the
  following command:
CONCAT ( ‘<img src =
»’, Filepath,‘
»Width =« 400
« > </ Img> ‘)

The width value is to adjust
according to the size of your photos.
- Click OK and OK.
Now, when you select the tool Infobulles,
when you halt on a point of the shape, the image appears automatically.

View photos with eVis

Another way to view the photos, without activating the html tooltips is the
extension eVis.

This extension is installed by default in QGis 2.18.

Simply check that it is activated when opening
the manager extensions.

> You will use both eVis tools:

If you do not see them in the toolbar, go to the View menu
-> Toolbars and check the Database Toolbar

Click on the tool Navigator events eVis
(the right button)

The navigation window opens:

Click on the tab Options, set the field to take into account
for displaying images ( filepath ) and check the box Remember,
then click Save.

Now, you can use the tool TooleVisIdEvent (left button). When you click on a picture
point on the map, the tool opens a window with the data of the attribute fields
as well as a window with the display of the image.

18:45
[MUSCATE News] two incidents affecting production and distribution
sur Séries temporelles

Update (September 13th) : Both incidents are solved and production is resumed

Two incidents happened on MUSCATE production center.

- the authentication on the distribution server is not working any more, and as a result, it is not possible to download products.

- CNES HPC center has been stopped yesterday, due to a breakdown on the disk storage facility, stopping the production. We will have to catch-up a backlog when the production resumes.

The technical teams are working on the issues and we hope the production and distribution will resume before the end of the week. We apologize for any inconvenience.

11 septembre 2018
22:17
Geotag and import photos replace photo2shape in QGis
sur Blog SIG & Territoires ---- Le blog SIG pour la gestion territoriale
This article is an update of a previous one, “Integrate geolocated photos in QGis with Photo2shape” . In fact, the
photo2shape plugin is no longer maintained and poses a lot of problems. We will
perform the same operations with the new plugin “Geotag and import
photos”.

In this article we will discuss how to create a layer of points in QGis including
positions and links to “geotagged” photos. Therefore, we will use the QGis
Photo2Shape plugin.

Introduction

Geotagging consists of specifying the geographic coordinates of
photos by changing their EXIF data (or tags). EXIF (Exchangeable
image file format) data of a photo includes different information such as the
type of camera, the date and time of the shooting etc…

If you have a camera equipped with a GPS, the location data can be included
automatically. For example, if you have an iPhone you can enable geotagging
pictures (see how to enable in the following page: How to turn photo geotagging on or off on your iPhone or iPad).

If you do not, instead of using some software such as Locr GPS Photo (
free ) or Robogeo (charged ) to include a location in your pictures, you can
use this new plugin (options geotag photos and photo tag).

Installing the Geotag and import photos plugin

The old photo2shape plugin used an additional Python module,
ExifRead . Geotag and import photos uses an executable
external to QGis to handle the EXIF format. This executable, ExifTool ,
is free and royalty free for all platforms.

You can download the latest version at http://www.sno.phy.queensu.ca/~phil/exiftool/

In Windows, once you have compressed the downloaded file, unzip it in a permanent
directory and rename the file in exiftool.exe.

You will have to tell the plugin the location of this executable.

To install the plugin in QGis, open the menu Extensions
-> Install /Manageextensions

Make sure that the experimental extensions are displayed. If this is not
the case, you will not find the plugin to be installed.

Select All and go through the list to find “Geotag
and import photos”. Click on the line to select it and click the Install
Extension button.

Close the window. You have now a new menu line
under Vector:

> Click Settings and fill in the first line with the location where you have placed exiftools.exe

Click Settings and fill in the first line with the location where you have placed exiftools.exe

Leave the second line empty. The installation and plugin configuration
is completed.

Loading photos in QGis

Let’s suppose you use an iPhone or equivalent. The images integration
procedure in QGis is extremely simple.

1- copy your images in a directory . With the Windows Photo Viewer, for example,
make sure that the photos are correctly positioned. Since you will link the photos
to the layer created, the photos will be viewed directly with QGis. Therefore,
it is essential that they are stored in the right place .

2-Start the creation of a shapefile corresponding to the geotags of your
photos with the plugin Geotag and import photos:

menu Vector -> Geotag and import photos ->
Import photos

Fill in the directory where you have your photos. Select the tags to be taken
into account (Here we have chosen Select all ). For each tag, the
plugin will create a column in the table of the output shape which will be filled
with the value found for each photo.

Enter the location and name for the output shapefile.

Click OK and if you have checked the Add
result to canvas, you will see the points corresponding to the photos:

> If you open the corresponding table you see the fields that have been created.

The most important part is the field that contains the directory and
image file name because this is what we will be using to display images in
QGis. The name of this field is by default, filepath.

Viewing photos in QGis

To view pictures automatically when moving the mouse over a point of the
shape, we will use the tooltips.
- Open the context menu of the created shape layer.
- Select item tooltips
- Select HTML
click on Insertanexpression
- In the Expression window type the
  following command:
CONCAT ( ‘<img src =
»’, Filepath ,’
»Width =« 400
« > </ Img> ‘)

The width value is to adjust
according to the size of your photos.
- Click OK and OK.
Now, when you select the tool Infobulles
, when you halt on a point of the shape, the image appears automatically .

View photos with eVis

Another way to view the photos, without activating the html tooltips is the
extension eVis .

This extension is installed by default in QGis 2.18.

Simply check that it is activated when opening
the manager extensions.

You will use both eVis tools:

If you do not see them in the toolbar, go to the View

-> menu -> Toolbars and check the Database Toolbar

Click on the tool Navigator events eVis
(the right button)

The navigation window opens:

Click on the tab Options, set the field to take into account
for displaying images ( filepath ) and check the box Remember,
then click Save.

Now, you can use the tool TooleVisIdEvent (left button). When you click on a picture
point on the map, the tool opens a window with the data of the attribute fields
as well as a window with the display of the image.

10 septembre 2018
13:50
Intéressez-vous à TJS
sur neogeo
Actuellement, les relations entre la plupart des IDG actuelles et les données tabulaires dont regorgent les collectivités et autres établissements publics sont assez tristes. Les géomaticiens qui participent à la conception, la réalisation et l’administration de telles infrastructures ont été élevés dans le culte de la donnée topographique, de la précision géodésique et des relations topologiques. Résultat : pas de géolocalisation, pas de publication.

Le constat est plutôt amer : les IDG actuelles ne savent pas valoriser des données tabulaires si elles ne sont pas passées entre les mains d’un géomaticien au préalable pour les géolocaliser. C’est regrettable puisque, quelques facteurs concordants devraient pousser leur publication sur des IDG :
- la majorité des données géographiques produites par les parties prenantes des IDG sont de simples données tabulaires organisées par unités territoriales (dont facilement géolocalisables) ;
- la majorité des utilisateurs des IDG (en collectivité, dans les services de l’Etat et dans bien d’autres administrations publiques) ont besoin d’indicateurs selon des découpages territoriaux et non de données topographiques qu’elles ne savent pas interpréter ;
- la majorité des gens qui aimeraient exploiter des IDG, n’ont pas de compétence en géomatique mais sont tout à fait capables de comprendre des cartes avec des indicateurs territoriaux.
À l’heure où l’Open Data prend le pas sur la mise en œuvre d’INSPIRE, la situation des IDG vis-à-vis des données tabulaires n’est plus tenable. Elle l’est d’autant moins qu’il existe justement un standard dont l’objectif est de fournir des données tabulaires à des outils SIG qui se chargeront d’y adjoindre une géométrie : Table Joining Service (TJS). L’intérêt de ce standard ne réside pas uniquement dans le fait qu’il gère des données tabulaires mais aussi que c’est l’application cliente qui se charge d’attribuer une géométrie et une représentation aux informations qui lui sont transmises. Cela permet de publier des données géographiques sans compétences spécifiques en géomatique (en faisant complètement abstraction de la projection, des problèmes de précision géographique, des règles de représentation cartographique…). On évite donc également de devoir publier les données en 3 versions pour satisfaire les adorateurs du RGE, les fans d’OSM ou ceux de je ne sais quel autre référentiel idéalisé.

C’est parce que nous sommes convaincus que les données tabulaires sont sous-exploitées par les IDG actuelles et que TJS apporte une solution concrète que nous avons développé un serveur sous licence ouverte implémentant ce standard : OneTjs. Aujourd’hui l’implémentation phare de TJS est Géoclip. Preuve de son interopérabilité, OneTjs permet d’alimenter le client cartographique d’un Géoclip distant avec vos propres données.

Illustration : offre hôtelière en Normandie servies par OneTjs et affichée dans Géoclip O3

Quand on vous dit que vous devriez vous intéresser à TJS…

7:30
Introduction à l’API Rest de GeoServer utilisée avec cURL et PHP sur Apache
sur GEOMATICK
Communiquer entre le site internet et le serveur cartographique est essentiel pour construire des architectures de Systèmes d’Informations Géographiques (SIG) intégrées. Ce court article introduit l’appel de l’API (Application programming interface) Rest (Representational state transfer) de GeoServer à l’aide des langages de programmation PHP (Hypertext Preprocessor) et cURL (client Uniform Resource Locator request library). Comme son l’indique, ce dernier langage permet de traiter les contenus issus d’URL comme par exemple les ressources en format JSON (JavaScript Object Notation) ou XML (Extensible Markup Language). Tout d’abord, on installe rapidement cURL sur le serveur Web Apache qui nous sert par la suite à retourner les informations de GeoServer.
1. Installation de cURL sur Apache et PHP
On a vu comment installer Apache et PHP (en temps que module) sur Windows et on doit donc configurer l’environnement pour mettre en œuvre cURL. Pour cela, il suffit de modifier le fichier php.ini situé dans votre répertoire PHP et d’activer l’extension dédiée :
```
extension=php_curl.dll
```
Pour fonctionner, cURL a aussi besoin des librairies DLL: libeay32.dll et ssleay32.dll. Ces dernières sont logiquement présentes dans votre installation PHP et il faut simplement vérifier que le chemin de PHP est bien défini dans le système Windows. Par exemple, si le répertoire de PHP est C:\php, ce chemin doit être copié dans la variable d’environnement système Path. Puis, on redémarre le serveur Apache.
2. Appel de l’API Rest de GeoServer
GeoServer met à disposition un style d’architecture appelé API Rest qui permet une interopérabilité entre le serveur cartographique et d’autres systèmes. Ce service web est basé sur les protocoles HTTP et il est alors possible de réaliser des requêtes sur les différentes URI (Uniform Resource Identifier) du serveur cartographique. Les opérations disponibles sur GeoServer sont de type GET, POST, PUT et DELETE. La documentation de l’API Rest de Geoserver détaille les différentes opérations disponibles pour chaque ressource. Par exemple, il est possible d’obtenir la liste des espaces de travail, des entrepôts, les couches SIG stockées et bien d’autres informations.

Pour tester les services web conformes au style d’architecture REST, de nombreux outils existent tel le logiciel Postman. Par défaut, GeoServer retourne les ressources associées en format JSON. Ici, on teste la requête GET : http://localhost:8080/geoserver/rest/workspaces/ pour obtenir la liste des espaces de travail (figure 1). Une demande d’authentification basique est nécessaire, il faut simplement saisir l’identifiant et le mot de passe de l’utilisateur (par défaut : admin et geoserver).

Figure 1 : Requête GET de liste des workspaces de GeoServer retournée en format JSON.

Pourquoi utiliser l’API Rest alors que GeoServer a une interface graphique?

L’intérêt est justement d’éviter de se servir de l’interface graphique pour ne pas répéter certaines tâches et donc automatiser au maximum les procédés. Par exemple, une couche SIG importée dans PostgreSQL peut être importée de manière programmée dans GeoServer. L’idée est au final de créer un système totalement intégré entre l’ensemble des composantes de votre architecture SIG.

Certes, GeoServer est développé en Java et il est donc plus commun de voir des systèmes intégrés basés sur ce même langage mais il est tout à fait possible de s’appuyer sur d’autres langages comme PHP ou Python pour manipuler l’API. Ici, on introduit rapidement l’appel de l’API Rest en PHP et cURL :
```
<?php
$url = "http://localhost:8080/geoserver/rest/workspaces/";
$ch = curl_init();	
$passwordStr = "admin:geoserver"; 
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_USERPWD, $passwordStr);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_HEADER, false);
curl_setopt($ch, CURLOPT [HTTPHEADER,] array('Content-Type: application/json','Accept: application/json'));
$data = curl_exec($ch);
var_dump($data);
curl_close($ch);
?>
```
Toutes les fonctions cURL et les paramètres associés sont détaillés dans le manuel PHP.

En Conclusion, l’installation de cURL / PHP sur Apache est simple et rapide et nous permet de prendre en charge les ressources issues de GeoServer à l’aide de son API Rest. On peut ainsi entreprendre le développement d’architecture SIG spécifique en déterminant les rôles des utilisateurs sur les couches SIG et la sécurité associée à ces dernières.

Vous avez besoin d’un conseil, d’une expertise ou d’une mise en place d’une architecture SIG (Serveurs, Bases de données, WebSIG) sur Windows ou Linux? Vous pouvez me contacter par email : contact@geomatick.com.

09 septembre 2018
14:33
[Le blog SIG & URBA] Affichage avancé dans Géorisques
sur GeoRezo.net - Géoblogs

Nous l'avons vu dans notre article précédent : Géorisques est la plateforme qui permet d'accéder aux informations liées à la prévention des risques.

Celles-ci sont visualisables dans la carte interactive : www.georisques.gouv.fr/cartes-interactives#/.

Si le flux ATOM proposé regroupe les différents types de risques à l'échelle départementale, il est possible de les visualiser séparément en déployant le catalogue Géorisques dans l'onglet de choix des couches ou en cliquant sur "afficher des couches supplémentaires".

Ensuite déployez ; Plan de Prévention des Risques (PPR) / PPR Naturels - Zonage / Zonage réglementaire des PPR Feu de forêt. C'est fait !

07 septembre 2018
6:15
Arcmap : Un script Python pour géocoder des adresses avec OpenStreetMap
sur Blog SIG & Territoires ---- Le blog SIG pour la gestion territoriale
At a time when QGis allows a free, unlimited and easy-to-use addresses geocoding
(see the article Geocodages of addresses with QGis 2.8 ), the
geocoding with ArcGis gets caught up in credits, API keys and others artifices
to charge and complicate to obtain the same
result. Fortunately some doors cannot be locked and there are still ways to do
it without necessarily passing by the checkout. Here is a small Python script
that allows you to geocode an address file with OpenStreetMap from ArcMap.

We owe the basis of this script to Riccardo . To geocode an address file, ie to take
a record with the address of a point and convert it to a point in a shape, we
need:

1- the geopy module of Python

2-a text file with addresses to geocode

3-the ArcMap toolbox

How to install the geopy module

To download the latest version updated the day of this article, click here

For an updated version, go to the Python Repository homepage: https://pypi.python.org/packages , search for
geopy with the search window, and download the latest geopy version available in
source version (not in Python wheel).

Unzip the downloaded file and search for a geopy directory (without other characters):

Copy this directory to the ArcGis Python directory. In theory, it is located on your C drive, directory Python27-> ArcGis10.X-> Lib

You have installed the geopy module.

Preparation of the address file

The geocoding will be executed by a web service, in our case the OpenStreetMaps
Nominatim service. You need to format your data if you want the web service to
understand what you want. Therefore we will minimally configure the addresses.

To get started, if you have not already loaded your addresses into a spreadsheet,
do it! You must have at least two columns:
- in the first you will put the
  address (number, street, …)
- in the second you will put the
  zip code and the city or town
The first row of the table must contain the names field. Avoid any
special characters, white, etc.

For our two fields, let’s suppose we name them address and
city

You can have more fields, but for the time being we will only use these two fields.

Now you must save the table as a text file. You have several text
formats suggested by the spreadsheets. In the case of Excel, choose text
separator tabs. By doing this, you will choose not only the field
separator but also the encoding type of the file. The encoding, as its name
suggests, are the ascii codes. If you have Notepad, you can see the encoding of
the file. In this case you will see encoding: ANSI.

If you do not follow these instructions, you may have a script crash in
Arcmap. You will need either to modify the script so that it corresponds to the
encoding of your file, or to return to the file and encode it using ANSI
(Latin-1).

The address file and ready to be geocoded.

The Python script

The script proposed here does not pretend to be a finished tool. There
are many aspects that are not taken into account. If this is enough for you,
good! If not, it will be useful as a basis to be modified and adapted for your
particular case.

You can download here a toolbox containing the script as well as the
sample text file.

geocoding

Remember to configure the toolbox script path to the provided .py file.

Operation

For the script to work, we need the address file (built above), as well
as an empty point shape.

We could create the shape in the script but in the current situation,
you have to create a point shape, with the WGS84 geographic coordinate system,
and a text field named Name where will be stored the address
contained in the record of the text file. Allow enough field length (100?) to
hold this address.

Except miracle, every time we geocode an address file, there are
addresses that are not found by the geocoding service. These addresses are put
in an output text file.

By launching the script you will have the following configuration window:

Shapesor is the points shapefile
where you will retrieve geocoded addresses

address file is the text file containing the addresses

address is the name of the address field containing the
address (number, street, …)

city is the name of the address field that contains the
postal code and the city

file errors is the name of the file where will be put the
addresses which will not have been geocoded.

Script content

Here is the whole script:

arcpy import
import geopy
import csv
from geopy.geocoders import Nominatim
geolocator = Nominatim ()

failed_text = « «

numbers_failed = 0
outShp = arcpy.GetParameterAsText (0)
infc = arcpy.GetParameterAsText (1)
outFC = arcpy.GetParameterAsText (4)
address = arcpy.GetParameterAsText (2)
arcpy.GetParameterAsText place = (3)
cursor = arcpy.InsertCursor (outShp)
with open (outFC, ‘w’) as file:
with open (inFC, ‘rb’) as csvfile:
content = csv.DictReader
(csvfile, delimiter = ‘\ t’)
for row in content:
feature =
cursor.newRow ()
vertex =
arcpy.CreateObject (« Point « )

coord =
geolocator.geocode (row [address] .decode (‘latin1’) + row [place] .decode
(‘latin1’), timeout = 25)

if coord is None:

failed_text + = row [address] + row [place] + « \not
«

numbers_failed + = 1

if coord is
not None:

vertex.X = coordinate.longitude

vertex.Y = coord.latitude

= vertex feature.shape

feature.Nom = row [address]

cursor.insertRow (feature)

file.write (failed_text)
file.close ()
del cursor
print « failed geocodes: »+ Str
(numbers_failed) +« !!! check the file
»+ OutFC

dataframe = arcpy.mapping.ListDataFrames
(arcpy.mapping.MapDocument (‘current’)) [0]
geocodelayer = arcpy.mapping.Layer (outShp)
arcpy.mapping.AddLayer (dataframe, geocodelayer, « BOTTOM
« )
layer_extent = geocodelayer.getExtent ()
dataframe.extent = layer_extent

Now let’s see the different parts.

First of all, we have the choice of the geolocator:

from geopy.geocoders import Nominatim
geolocator = Nominatim ()

If you want to use another geocoding service, this is the moment to
choose it. Remember that some services require an API key, a username, a
password. In these cases it will be necessary to add the adequate code to
initialize the connection.

Secondly, we have recovery of the parameters provided in the script configuration
window:

outShp = arcpy.GetParameterAsText (0)
infc = arcpy.GetParameterAsText (1)
outFC = arcpy.GetParameterAsText (4)
address = arcpy.GetParameterAsText (2)
arcpy.GetParameterAsText place = (3)

You can edit the script for more setting options, such as the separator used in the address file. In this case you must add the parameter in the script configuration: right click on the script in the toolbox window -> Properties -> Settings tab

and add a code line with a variable name as well as the parameter index:

spacer = arcpy.GetParameterAsText (6)

Line:

cursor = arcpy.InsertCursor (outShp)

set up a cursor on the shape file that allows the insertion of the
points of the found addresses.

Line :

content = csv.DictReader (csvfile, delimiter
= ‘\ t’)

uses the csv Python module to read the contents of the address file into
a content variable . The delimiter = ‘\ t’ option indicates
the module that the field separator is the tab. If you use another separator
(which I do not recommend), this is where you should indicate it.

feature = cursor.newRow ()
vertex = arcpy.CreateObject (« Point
« )

correspond to the creation of a new point type entity in the output
shapefile.

The geocoding call uses the address and place variables
that correspond to the address and city fields of the script
parameters.

coord = geolocator.geocode (row [address] .decode
(‘latin1’) + row [place] .decode (‘latin1’), timeout = 25)

Depending on the encoding of the text file, you may need to change
‘latin-1’. You have multiple possibilities, but the most common are ‘utf-8’ and
‘UTF-16LE’.

If the return of geocoding (coord) is empty, write the address in the
error file and if it is not empty, create the point in the shapefile.

if coord is None:
failed_text + = row [address] + row [place] + «
\not «

numbers_failed + = 1

if coord is not None:

vertex.X = coordinate.longitude
vertex.Y = coord.latitude

= vertex feature.shape

feature.Nom = row [address]
cursor.insertRow (feature)

feature.Name is the Name field created in the
shapefile at the start of the process. If you call the field other than Name
this line must be modified.

The end of the script loads the shapefile into the active ArcMap
document.

The final result of the order is as follows:

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