Planet Georezo » January 25, 2012

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25 janvier 2012
22:48
Webinar To Look At Open Source Geo Solutions For Small BusinessAnyGeo - GIS, Maps, Mobile and Social Location Technology
sur Planet Geospatial - http://planetgs.com

Here’s details of a webinar that should appeal to many. The focus of the event is hot topics such as free tools, and open source software, with a focus on the small business owner. Some details… GIS professionals thinking about taking their careers to the next level and starting their own business need to tune [...]
22:32
MapMyFitness Adds Dog Walk Tracking With MapMyDogWalkAnyGeo - GIS, Maps, Mobile and Social Location Technology
sur Planet Geospatial - http://planetgs.com

I’m a fan of the “MapMyFitness” suite of apps, (you know, these are cool tracking services that store your walks, runs, rides etc… using a mobile client and provide for sophisticated social sharing and more) and now I can even track and share my dog walks thanks to the latest solution, MapMyDoogWalk. The app was [...]
21:31
Distributech: Demand response (DR) - a business opportunity for owners of commercial buildingsBetween the Poles
sur Planet Geospatial - http://planetgs.com

In the US historically electric power utilities have attempted to build enough capacity to meet peak load. For example, California uses 5% of its electric power generation capacity less than 50 hours a year. But peakers, as the power plants are called that are only fired up to meet peak load - typically on a hot July or August afternoon, are expensive. Power utilities can reduce their CAPEX and their OPEX, and customers' power bills, by shaving peak load.

Demand Response

One of the ways that power companies in the US are increasingly turning to is demand response (DR). DR is an agreement between the power utility and a customer, such as a residential, industrial, or commercial site, which allows the utility to shut down or otherwise reduce the power demand from some of the facilities or equipment at the customer's site. It can be a manual process where the power utility contacts the customer and negotiates the shut down of some part of the customer's power equipment, or increasingly the DR process is automated.

DR can be a win-win-win for everyone. The customer reduces his/her electric power bills, the utility doesn't have to fire up a peaker or build new power plants, which benefits the utility, the customer, and the environment. Recently FERC has mandated that a negawatt should be compensated at the same rate as a megawatt. In other words, customers should be paid the same for reducing load by a megawatt as a generator is paid for generating a megawatt. Utilities have found that industry has generally been responsive to DR programs, but have not found the same level of interest among owners of commercial buildings. Commercial buildings are responsible for about 20% of total energy consumption in the US and about the same proportion of emissions.

At Distributech, Brendan Owens of the US Green Building Council (USGBC) and Peter Wiegand of Skipping Stone outlined an initiative to increae awareness among owners of commercial buildings of the benefits of DR. The USGBC is responsible for the widely used LEED program for certifiying buildings as green according to a number of criteria. Onwers who are interested in certifying their buildings according to the LEED scorecard can get a LEED DR credit if they participate in a DR program. A directory of commercial building owners who are participating in DR programs has been compiled.

The USGBC and Skipping Stone and other partners including Lawrence Berkeley National Labs and the Environment Defence Fund have started the Demand Response Partnership Program

(DRRP) to educate owners of commercial buildings about the benefits of DR and to encourage greater adoption of DR by this sector. They have announced that Southern California Edison has agreed to support the effort.
21:21
Smartphones Are Most Popular Home Device And Enable Multi TaskingAnyGeo - GIS, Maps, Mobile and Social Location Technology
sur Planet Geospatial - http://planetgs.com

No huge surprise here in some recent research findings from RazorFish that show the smartphone as being the most favored home device. Interesting to see that the handy gadgets are enabling more multi-tasking at home, but also are enabling users to slip out of awkward social situations! The findings are based on responses from more [...]

21:10
Australian Rain Radars on Google Maps
sur Google Maps Mania

BOMMap is an Australian weather map that allows users to view animations of the latest radar images from Australia's Bureau of Meteorology.

The initial view of BOMMap shows where it is currently raining in Australia and therefore where radar animations are also currently available to view on the map. Users just need to select one of the displayed map markers to view the latest radar animation from that location.

The creator of BOMMap has also set up a subReddit where users can submit suggestions and possible improvements to the map.

20:53
Micha Silver: Spatialite and Excel on talking terms
sur Planet OSGeo
The recent stable version of Spatialite, 3.0, supports linking to and importing Excel spreadsheet tables. Read on to see how it’s done.

The developers of spatialite have added a driver for *.xls files (thru the FreeXL library ). You can either link to, or import a single sheet from an Excel file provided that:
- the file is Excel 2003 format (not the newer xml format)
- the table is “cleanly” formated – only data in rows, no empty rows, etc.
- the first row contains either column headers, or straight-away the first data entry
However the columns of data are imported into spatialite without any data type. If you want to specify the data type for each column, my procedure is:
1. link to the external table (create a virtualXL table)
2. create your own, well defined table
3. use the SQL construct “INSERT INTO … SELECT FROM…” in order to copy all data from the linked table into your structured table.
4. then run the spatial funtions AddGeometryColumn() and MakePoint() in order to convert the table to a spatial layer
These few steps might seems a bit complex just to get a table of data into spatialite, but this method insures that data will be structured exactly as you want.

If you’re working with spatialite from the command line, here’s the command syntax for loading an excel sheet:

.loadxl <args> Loads a XL spreadsheet (.xls) into a SpatiaLite table arg_list: xl_path table_name [worksheet_index [first_line_titles{0/1}]]

Note that the worksheet index begins with 0. So if you have more than one sheet in your Excel file, be sure to set the correct index for the worksheet containing the table. The last parameter indicates (by values 0 or 1) whether the first row holds column headers. So for example you could import the first sheet of an excel worksheet called ‘host_trees.xls’, which contains column headers in the first row, with the following command:
spatialite>.loadxl 'host_trees.xls' host_trees 0 1 XL loaded

3770 inserted rows
spatialite>

We’ll follow the full procedure to smoothly import a spreadsheet of longitude,latitude data and create a spatial layer with screen shots from the spatialite_gui. Suppose we begin with a table that looks like this:

Excel table of data with Longitude/Latitude loctaions

First import the table using the VirtualXL button. This creates a link in the spatialite db to the sheet from Excel.

Importing an Excel table as VirtualXL

In the next image note that the linked data table has no types for the columns. So we’ll create our premanent table (named here ‘MyHostTrees’)within spatialite, specifying the correct data types, then we will transfer the date over from the virtual table to the permanent one. Follow the steps…

Crete a new, permanent table with correct data types

Now we transfer the data from the virtual table to the permanent table using the SQL construct: “INSERT (…) INTO … SELECT … FROM …”. Here’s how it looks:

Copy data from virtual table to permanent table

We continue by making this new table a spatial table with the AddGeometryColumn() function, then we populate this Geometry column using the MakePoint() function.

Using the AddGeometryColumn function

Populating the Geometry column

And here’s the result:

Spatial table containing data with Geometry column

20:42
SICS/MASAS : un projet porteur pour l’intéropérabilité en sécurité civile
sur Blogue de la géomatique du MSP

En novembre 2011, le Centre des sciences pour la sécurité de R & D pour la défense Canada a lancé le projet pilote SICS dans le cadre de l’initiative de conception du Système interorganisationel de connaissance de la situation (SICS, appelé MASAS en anglais). Ce système s’appuie sur le continuum canadien de l’intéropérabilité des communications (gouvernance, procédure opérationnelle, technologie, formation et utilisation), qui s’intègre globalement dans la Stratégie d’interopérabilité des communications pour le Canada, dont le Québec fait partie.

Ce projet SICS/MASAS a pour objet l’opérationnalisation d’un système pancanadien de communication entre les intervenants en sécurité civile. L’objectif de ces services essentiels est d’offrir un protocole d’échange standardisé (et centralisé au besoin) afin que les communautés des mesures d’urgence à travers tout le Canada jouissent d’un système opérationnel commun stable, fiable, structuré, uniforme et durable sur l’information relative aux événements (ex. sinistre), alertes (ex. alerte météo) et opérations (ex. évacuation) de sécurité civile ainsi que des infrastructures essentielles (ex. routes bloquées). À titre d’exemple, il sera possible lors d’un événement majeur reliée à une inondation en secteur habité de partager la même information (ex. localisation, sévérité, responsable, opération sur le terrain, infrastructure touchée, équipe de sauvetage, alerte d’évacuation, etc.) entre les premiers répondants (ex. 911, police, ambulance, pompier), les coordonnateurs locaux/régionaux des mesures d’urgences, les conseillers en sécurité civile du MSP et les ministères du gouvernement fédéral (ex. Environnement Canada) afin d’améliorer la coordination d’un même événement de sécurité civile à multiple dimension.

Les utilisateurs autorisés et inscrits pourront publier, partager et utiliser de l’information sur une situation de sécurité civile au moyen du SICS/MASAS en employant leurs propres applications ou encore des outils Web très élémentaires de publication et d’échange d’informations misent à leur disposition, et ce, sans frais par le projet SICS/MASAS. Des outils à code source ouvert en phase de développement sont également disponibles pour les utilisateurs inscrits, tels que la fonction de visualisation : [tbs-sct.ircan-rican.gc.ca] et de d’envoi d’information : [tbs-sct.ircan-rican.gc.ca] ainsi qu’un API [api.masas-sics.ca] pour les développeurs et les besoins d’automatisation/filtres. La nature géographique des événements et alertes en sécurité civile est cruciale pour la diffusion et la lecture de cette information, c’est pourquoi la géomatique est une dimension cruciale dans ce projet. La structure des messages SICS suivent également le profil canadien du Protocole d’alerte commun que l’on nomme le CAP-PC et la configuration géographique du GeoRSS version simplifiée. Ce protocole d’alerte CAP-PC sera celle supportée dans les prochains mois au MSP.

Un environnement d’exploration ouvert par le gouvernement fédéral est déjà en ligne pour les futurs contributeurs et utilisateurs officiels des mesures d’urgence (sécurité civile, police, pompier, ambulance, 911, etc.) : [sct-tbs.rican-ircan.gc.ca]

Comme le MSP utilise déjà certaines des composantes à code source ouvert du SICS/MASAS dans ses applications web cartographiques (ex. GOLOC), il sera très facile de l’intégrer au sein de son infrastructure géomatique. À titre d’exemple, OpenLayers, GeoExt et ExtJS sont des librairies supportées par l’environnement de développement du projet SICS/MASAS, comme elles le sont au MSP. À court terme, le MSP va démarrer un projet pilote dans une région ciblée pour identifier le mode de gouvernance, les procédures opérationnelles, les développements technologiques, les besoins de formations et le type d’utilisation du SICS/MASAS. À moyen terme, le MSP va élaborer une façon de déployer un environnement autonome SICS/MASAS au Québec qui permettra de filtrer les événements et alertes du SICS/MASAS et de diffuser des informations aux partenaires du MSP, comme les ministères/organismes du gouvernement du Québec au sein de l’OSCQ et les autorités locales (ex. municipalités) dans l’ORSCQ selon les standards reconnus (ex. WMS et CAP-PC). Pour plus d’information sur ce projet, veuillez contacter l’équipe géomatique du MSP au courriel suivant : geomsp(a)msp.gouv.qc.ca

19:38
Lectures croisées : La tentation des frontières
sur Les Cafés géographiques

Michel Foucher, 2007, L'obsession des frontières, Perrin, Paris, 249 p.
Bernard Reitel, 2011, « La frontière internationale, objet sémique, processus multidimensionnel, interface signifiante », Workings Papers, n°43, CEPS/INSTEAD, Esch-sur-Alzette, 36 p., en ligne : [www.ceps.lu]
Si l'on pourrait penser a priori la frontière comme un objet géographique (trop) bien connu [1], l'actualité nous rappelle chaque jour combien il est plus que jamais nécessaire de repenser et de (...)

19:12
Gary Sherman: Using the QGIS Raster Calculator
sur Planet OSGeo
The raster calculator allows you to perform mathematical operations on each cell in a raster. This can be useful for converting and manipulating your rasters. Operators include:
- Mathematical (+, -, *, /)
- Trigonometric (sin, cos, tan, asin, acos, atan)
- Comparison (<, >, =, <=, >=)
- Logical (AND, OR)
To perform operations on a raster or rasters, they must be loaded in QGIS. The raster calculator is accessed from the Raster menu and brings up the dialog:

Let’s look a few examples.
Simple Mathematical Calculation
Doing a simple calculation is easy. In this example we have a Digital Elevation Model (ancc6) loaded in QGIS. The DEM contains elevations for a 1:63,360 quadrangle in Alaska. The coordinate system is geographic and the elevation value in each cell is in meters. If we wanted to create a raster with elevation in feet, we can use these steps to create the expression:
1. Bring up the raster calculator
2. Double click on ancc6@1 in the raster bands list to add it to the expression
3. Double click the multiplication operator (*)
4. In the expression box, type in the conversion factor for meters to feet: 3.28
This gives us the following expression:

ancc6@1 * 3.28

To complete the process, we specify a name for the output raster and the format we want to use. When you click OK, the operation will be performed and the new raster created, giving us a GeoTIFF with cell values in feet. If you leave the Add result to project box checked the output raster will be added to QGIS once the calculations are done.

If you only want to operate on a portion of a raster, you can use the extent setting to limit the area included in the calculation.
Using a Mask
Sometimes you might want to mask out part of a raster. An example might be one where you have elevations ranging from below sea level to mountain tops. If you are only interested in elevations above sea level, you can use the raster calculator to create a mask and apply it to your raster all in one step.

The expression looks like this:

(my_raster@1 >= 0) * my_raster@1

The first part of the expression in parentheses effectively says: for every cell greater than or equal to zero, set its value to 1, otherwise set it to 0. This creates the mask on the fly.

In the second part of the expression, we multiply our raster (my_raster@1) by the mask values. This sets every cell with an elevation less than zero to zero. When you click OK, the calculator will create a new raster with the mask applied.
Simulating a Rise in Seal Level
Using the raster calculator and a mask we can visually simulate a rise in sea level. To do this we simply create the mask and overlay it on the DEM or perhaps a DRG (topographic) raster.

The expression to raise sea level by 100 meters is:

ancc6@1 > 100

The output raster contains cells with either a 0 (black) or 1 (while) value:

The black areas represent everything below an elevation of 100 meters, effectively illustrating a sea level rise. When we combine this with a suitable background we can demonstrate the results:

We added the DRG for the quadrangle and overlaid it with the mask layer. Setting the transparency to 70% allows the DRG to be seen, illustrating the effect of raising sea level.

The raster calculator is a powerful tool. Check it out and see how you might use it in your analysis and map making.

19:12
Using the QGIS Raster CalculatorSpatial Galaxy
sur Planet Geospatial - http://planetgs.com
The raster calculator allows you to perform mathematical operations on each cell in a raster. This can be useful for converting and manipulating your rasters. Operators include:
- Mathematical (+, -, *, /)
- Trigonometric (sin, cos, tan, asin, acos, atan)
- Comparison (, =, =)
- Logical (AND, OR)
To perform operations on a raster or rasters, they must be loaded in QGIS. The raster calculator is accessed from the Raster menu and brings up the dialog:

Let’s look a few examples.
Simple Mathematical Calculation
Doing a simple calculation is easy. In this example we have a Digital Elevation Model (ancc6) loaded in QGIS. The DEM contains elevations for a 1:63,360 quadrangle in Alaska. The coordinate system is geographic and the elevation value in each cell is in meters. If we wanted to create a raster with elevation in feet, we can use these steps to create the expression:
1. Bring up the raster calculator
2. Double click on ancc6@1 in the raster bands list to add it to the expression
3. Double click the multiplication operator (*)
4. In the expression box, type in the conversion factor for meters to feet: 3.28
This gives us the following expression:

ancc6@1 * 3.28

To complete the process, we specify a name for the output raster and the format we want to use. When you click OK, the operation will be performed and the new raster created, giving us a GeoTIFF with cell values in feet. If you leave the Add result to project box checked the output raster will be added to QGIS once the calculations are done.

If you only want to operate on a portion of a raster, you can use the extent setting to limit the area included in the calculation.
Using a Mask
Sometimes you might want to mask out part of a raster. An example might be one where you have elevations ranging from below sea level to mountain tops. If you are only interested in elevations above sea level, you can use the raster calculator to create a mask and apply it to your raster all in one step.

The expression looks like this:

(my_raster@1 >= 0) * my_raster@1

The first part of the expression in parentheses effectively says: for every cell greater than or equal to zero, set its value to 1, otherwise set it to 0. This creates the mask on the fly.

In the second part of the expression, we multiply our raster (my_raster@1) by the mask values. This sets every cell with an elevation less than zero to zero. When you click OK, the calculator will create a new raster with the mask applied.
Simulating a Rise in Seal Level
Using the raster calculator and a mask we can visually simulate a rise in sea level. To do this we simply create the mask and overlay it on the DEM or perhaps a DRG (topographic) raster.

The expression to raise sea level by 100 meters is:

ancc6@1 > 100

The output raster contains cells with either a 0 (black) or 1 (while) value:

The black areas represent everything below an elevation of 100 meters, effectively illustrating a sea level rise. When we combine this with a suitable background we can demonstrate the results:

We added the DRG for the quadrangle and overlaid it with the mask layer. Setting the transparency to 70% allows the DRG to be seen, illustrating the effect of raising sea level.

The raster calculator is a powerful tool. Check it out and see how you might use it in your analysis and map making.
19:07
New Bing Maps Features Help You Feel Spatial…
sur Planet Geospatial - http://planetgs.com
Coming back after the holiday season with a lot of energy, the Bing Maps team kicked off 2012 with releases of a new routing engine and the WPF control. Today--only 2 weeks later--we are now announcing several new features in the Bing Spatial Data Services and the Bing Maps Account Center. New features include a data source for traffic incidents, the ability to find points of interest (POI) along a route, wildcard-searches in your POI, incremental updates of POI data sources, improved reporting and more. Happy New Year! Are you feeling the love?

The Bing Spatial Data Services provide a REST interface that allows you to geocode or reverse-geocode your own POI data sources in batch-mode, manage these data sources and query your own or some public POI data sources that Bing Maps provides in a spatial context.

In this release, we added the following features:
1. Incremental Upload - Your own data sources now support incremental updates by setting the parameter ‘loadOperation’ in the Data Source Management API to ‘incremental’. So, once you’ve uploaded a data source of X number of locations into the Spatial Data Service, if you just want to add a few records you can just send those few records. We’ll handle the add and update functions for you!
2. Wildcard Searches - New Query Options support wildcard searches through filter criteria. Let’s say you want to query your data source to find the nearest locations around a point AND you want to filter the results based on the beginning or end of a keyword. For example, let’s say you have a “Store Manager” field in your data source. You can look for said manager by last name, “%Smith” or first name “John%” so you get all the Smiths or Johns within a region.
3. Traffic Incidents - Traffic Incidents for North America are now available as a public POI data source and can be accessed through the Query API. Now the traffic incidents you see on Bing Maps are available to you in your applications via a spatial query.
4. Find Near Route - The Bing Spatial Data Service supports now an additional spatialFilter which allows you to search for POI along a route. This is a game changer. Let’s say you’re a coffee company and you want to empower your users to have the ability find all your locations along their drive from, say Seattle to San Francisco…now you can! The Find Near Route Feature allows you to spatially query the points you’ve uploaded into SDS within a 1 mile buffer of your route.
http:// spatial.virtualearth.net /REST/v1/data/

439698230d90496596083f3fe7aafeb2/

TrafficIncidents/

TrafficIncident

?key=[YOUR_BING_MAPS_KEY]

&$format=json

&jsonp=callbackFindTrafficIncidentsNearRoute

&spatialFilter=nearRoute('47.678558349609375,-122.13098907470703',

'47.60356140136719,-122.32943725585937')

You will find a complete sample using the Bing Maps AJAX Control version 7 for visualization, the DirectionsManager class for driving directions, the TrafficLayer class for traffic-flow information and the Bing Spatial Data Services for traffic-incident information along a route here. Alternate versions of the SDK are available in PDF and .chm format, as well.

Note: Neither the Wildcard-search nor the spatial-filter ‘nearRoute’ are supported with the public data sources NAVTEQNA and NAVTEQEU.

The Bing Maps Account Center is the portal through which you can find information for development with Bing Maps, and also manage your account. It contains links to interactive and traditional SDKs, a facility to generate Bing Maps Keys, a web user interface to manage your own POI data sources and a reporting service through which you can retrieve statistics about your Bing Maps usage.

In this latest release we added the following features.
1. Additional data validation has been introduced for the upload of your own POI data sources.
2. Before it was already possible to add and edit records in a data source that you uploaded through the portal. You can now also download and delete data sources.
3. Image capturing adds now additional security during the generation of Bing Maps Keys.
4. Additional reports have been added to provide more details on the use of specific Bing Maps Keys.
We certainly hope you’re feeling special (and spatial!). We’re investing quite a bit of energy into Bing Maps and hope to see some killer apps. Happy Coding!!!

Johannes Kebeck & CP

18:30
TGV et TER : enjeux de la desserte ferroviaire de Toulouse et de Midi-Pyrénées
sur Les Cafés géographiques

Débat "TGV et TER : enjeux de la desserte ferroviaire de Toulouse et de Midi-Pyrénées" animé par Robert Marconis (Géographe, Toulouse-Le Mirail) le Mercredi 25 janvier 2012 à 18h30 au PAPAGAYO (Place Anatole France, M° Capitole).
18:30
La France de 2012 a-t-elle encore une identité géographique ?
sur Les Cafés géographiques

Débat "La France de 2012 a-t-elle encore une identité géographique ?" animé par Armand Frémont, Robert Marconis (Géographe, Toulouse-Le Mirail) et Bernard Charlery de la Masseliere (Géographe, Toulouse-Le Mirail) le Mercredi 25 janvier 2012 à l'Université du Mirail, Amphi 12, bât. de langues, à 15h.
L'identité de la France est un objet obscur. Le territoire national avait trouvé son aboutissement à la frontière physique. Aujourd'hui la solidarité, la socialité et l'être ensemble ne se définissent plus uniquement par référence à (...)

18:30
Evaluating Access to Spatial Data Information in RwandaGEODATA POLICY
sur Planet Geospatial - http://planetgs.com

by Felicia O. Akinyemi, URISA Journal 2011, Volume 23, No 2 Abstract: Access to spatial data is of growing interest to practitioners and society for the use of geospatial technology pervades all fields, and all sectors of the economy can use the same information in different applications. Means of data access appropriate to any given [...]

18:13
Sean Gillies: Notes on learning Clojure
sur Planet OSGeo
I'm learning Clojure and having fun with it. I never learned a Lisp in school like many programmers my age did. The one variant I did try, about 15 years ago, was Scheme. I did a little Gimp scripting with it but nothing else. I think I had to mature a bit before I could appreciate the Lisp style for what it is.

For a language that's designed to be more simple than easy, it's surprisingly easy to use Java classes in Clojure. This is the first code I've written using JTS classes in a while.
```
user=> (.buffer
  (.read (com.vividsolutions.jts.io.WKTReader.) "POINT (0 0)")
  1.0)
#<Polygon POLYGON ((1 0, 0.9807852804032304 -0.1950903220161282, ...))>
```
I assumed I'd have to write something like a Python C extension module to do this and am thrilled to be wrong.

18:13
Notes on learning ClojureSean Gillies Blog
sur Planet Geospatial - http://planetgs.com
I'm learning Clojure and having fun with it. I never learned a Lisp in school like many programmers my age did. The one variant I did try, about 15 years ago, was Scheme. I did a little Gimp scripting with it but nothing else. I think I had to mature a bit before I could appreciate the Lisp style for what it is.

For a language that's designed to be more simple than easy, it's surprisingly easy to use Java classes in Clojure. This is the first code I've written using JTS classes in a while.
```
user=> (.buffer
  (.read (com.vividsolutions.jts.io.WKTReader.) "POINT (0 0)")
  1.0)
# POLYGON ((1 0, 0.9807852804032304 -0.1950903220161282, ...))>
```
I assumed I'd have to write something like a Python C extension module to do this and am thrilled to be wrong.
17:34
Government Cuts Hit Copenhagen’s Mapping AgencySpatial Sustain
sur Planet Geospatial - http://planetgs.com

The Copenhagen Post reports that the Environment Ministry is set to lay off 115 positions from three different agencies, including 25 from their Mapping and Surveying Agency. The cuts come as the ministry works toward a 2.5 percent reduction in their budget that will double to 5 percent in 2015. The entire Environment Ministry is [...]

16:41
Public Alert Warnings Now on Google Maps
sur Google Maps Mania

Google has just launched Google Public Alerts, a Google Maps based website to bring you information about relevant emergency alerts in your area.

The map shows weather alerts, public safety warnings, and earthquake alerts from US National Oceanic and Atmospheric Administration (NOAA), the National Weather Service, and the US Geological Survey (USGS). For example, the map is showing right now flash flood and severe thunderstorm warnings at various locations in Texas and high wind warnings for South-western California.

There is some integration with the main Google Maps site as well, although you do have to search for the alerts. For example, at the time of writing, if you search for 'flash flood Texas' in Google Maps an alert appears in the Google Maps sidebar. You can then click on the alert to get further details.

I actually think Public Alerts deserves more prominence on Google Maps. I'd like to see it made available as a layer (it could sit very nicely just under the Weather layer option in the Google Maps drop-down menu).

Via: Google LatLong

16:37
switch2osm Make the switch to OpenStreetMapMapperz - The Mapping News Blog
sur Planet Geospatial - http://planetgs.com

A nice clean website promoting Open Street Map. "switch2osm Make the switch to OpenStreetMap" OpenStreetMap won’t charge you OpenStreetMap is...

Map and GIS News finding blog. With so many Maps and GIS sites online now it is hard to find the good from the not so good. This blog tries to cut the cream and provide you with the newest, fastest, cleanest and most user friendly maps that are available online. News has location and it is mapped.

16:30
The Croatians said "Yes"
sur Articque - Les Sytèmes d'Analyse Géographique, la cartographie, le géomarketing et la géostatistique

On January the 22nd was held a referendum that allowed Croats to vote for the accession of their country to the European Union (66% voted “Yes”).

15:44
Google Geonews: Public Alerts in Google Maps Launched, Summaries of 2011, pyKML, World Bank Using Google Map Maker, and much moreSlashgeo.org
sur Planet Geospatial - http://planetgs.com
Here's the recent Google-related geonews, it covers a longer time span than usual.

From official sources:
- Here's a summary entry of the major changes and updates to Google Maps and Google Earth in 2011
- Google launched today Public Alerts in Google Maps: "If a major weather event is headed for your area, you might go online to search for the information you need: What’s happening? Where and when will it strike? How severe will it be? What resources are available to help?"
- The World Bank signed a greement to use Google Map Maker for disaster preparedness, this just makes me wish even more that Google will join and merge GMM with the OpenStreetMap bandwagon
- On the dev blog, they introduced pyKML, a Python library for manipulating KML
- There's new 45 deg imagery for nothing less than 24 cities:
  - US: Boise/Caldwell, ID; Buffalo, NY; Chattanooga, TN; Cleveland, OH; Denver, CO; Greenville, SC; Houston/Pasadena, TX; Kansas City/Gladstone, MS; Knoxville/Louisville, TN; Memphis/Bartlett, TN; Mobile, AL; Nashville, TN; Pensacola, FL; Racine, WI; Santa Monica, CA; Sarasota/Englewood, FL; Stockton, CA
  - Europe: Baiona, Spain; Basel, Switzerland; Friedberg, Germany; Mannheim, Germany; Santander, Spain; Ulm, Germany
  - South America: Porto Alegre, Brazil
- StreetView is now available in South Korea, for the cities of Seoul and Busan and there's new campus tours in Street View too
- Google is open sourcing Sky Map and will collaborate with Carnegie Mellon University
- On the dev blog, here's about integrating Street View and custom panoramas into your apps
- And another entry discusses heatmap.js and its Google Maps API Heatmap Overlay
- There's an official Google Maps game coming to Google+ next month
- Here's biodiversity tours in Google Earth
- There was a major imagery update the first week of January, here's the details
From other sources:
- The GEB shares his own recap the year 2011 for Google Earth
- Here's an entry on traffic congestion visualization in Google Earth
- If you're curious about the Costa Concordia ship wreck, here it is in Google Earth and satellite imagery
- Here's an entry on wave mechanics in Google Earth
- Here's the North American power plant emissions in Google Earth
- Mapperz informs us that Google Maps U.K. now integrates National Rail Info and Ed Parsons offers an entry on multi-modal travel planning in Google Maps
- APB reports that Android phones now ranks above iPhone when it comes to GPS navigation
Google Plus One

15:30
Les Croates ont dit « Oui »
sur Articque - Les Sytèmes d'Analyse Géographique, la cartographie, le géomarketing et la géostatistique

Le 22 janvier s’est tenu un référendum qui a permis aux Croates de se prononcer à 66% pour l’adhésion de leur pays à L’Union Européenne.

15:15
Slashgeo (FOSS articles): Marble 1.3.0 and "Marble Touch" Released
sur Planet OSGeo

Marble 1.3 has been released with lots of new gems: Marble — the virtual globe and world atlas — now integrates with KDE Plasma. By allowing for coordinate and bookmark searches, Marble can be opened directly from the Plasma search bar.

The new Elevation Profile shows the incline of routes, which can be edited interactively.

Stargazers can view and track Earth satellites thanks to Marble participation in the European Space Agency (ESA) Summer of Code in Space.

During Google Summer of Code, Marble gained initial support for display of .osm (OpenStreetMap) files in vector format.

Owners of the Nokia N9/N950 are the first to receive the new mobile application Marble Touch.

Further details can be found in the feature guide.
Google Plus One

15:15
Marble 1.3.0 and "Marble Touch" ReleasedSlashgeo.org
sur Planet Geospatial - http://planetgs.com

Marble 1.3 has been released with lots of new gems: Marble — the virtual globe and world atlas — now integrates with KDE Plasma. By allowing for coordinate and bookmark searches, Marble can be opened directly from the Plasma search bar.

The new Elevation Profile shows the incline of routes, which can be edited interactively.

Stargazers can view and track Earth satellites thanks to Marble participation in the European Space Agency (ESA) Summer of Code in Space.

During Google Summer of Code, Marble gained initial support for display of .osm (OpenStreetMap) files in vector format.

Owners of the Nokia N9/N950 are the first to receive the new mobile application Marble Touch.

Further details can be found in the feature guide.
Google Plus One

15:12
Cézanne et Paris (Musée du Luxembourg, Paris)
sur Les Cafés géographiques

Il ne reste plus que quelques semaines pour admirer la belle exposition « Cézanne et Paris » présentée au Musée du Luxembourg du 12 octobre 2011 au 26 février 2012.
Suivre le cheminement artistique d'un peintre selon un angle singulier conduit bien souvent à mettre clairement en évidence les aspects majeurs d'une recherche picturale. Pour Cézanne, le Provençal, dont l'œuvre est si fréquemment associée aux paysages de la Montagne Sainte-Victoire ou de l'Estaque, une lecture « parisienne » de sa production (...)

15:09
Rendering: A Geospatial DefinitionVector One
sur Planet Geospatial - http://planetgs.com

When we talk about ‘rendering’ we are talking about creating a visual representation that originates from a model. That model can be created using computer-aided design (CAD) tools, geographic information systems (GIS) and or any other software or technology that aims to set up a representation of an object, landscape or other feature about its [...]
15:00
From Public Records to Open Government: Access to Massachusetts Municipal Geographic DataGEODATA POLICY
sur Planet Geospatial - http://planetgs.com

by Robert Goodspeed, URISA Journal 2011, Volume 23, No 2 Abstract: Increasingly, citizens are demanding access to raw data from governments to hold public officials accountable, look up facts, conduct analysis, or create innovative applications and services. Cities and towns create data using geographic information systems such as layers describing parcels, zoning, and infrastructure that [...]

14:53
Matt Sheehan: Flexible Mobile GIS Frameworks
sur Planet OSGeo

We have spoken many times on this blog about our release of GeoMobile for ArcGIS. The link below will take you to a more detailed discussion:

http://www.webmapsolutions.com/free-mobile-arcgis-viewer-upgraded

Our logic for the release was:
To demonstrate a custom ArcGIS mobile application Build a cross platform mobile GIS app or one code base which runs on multiple platforms; iOS, [read full article]

14:28
Google Earth 6 now required for Street ViewGoogle Earth Blog
sur Planet Geospatial - http://planetgs.com

When Google Earth 6.0 was released, it completely changed the way that Street View worked. However, Google kept the older layer active for previous versions of Google Earth so that those users could continue to use Street View. Not anymore.

Sometime in the past few weeks, Google has turned off that old layer. If you're wanting to use Street View in Google Earth, you're now required to be using version 6.0 or higher.

Here's a quick look at how to use Street View in Google Earth 6:

In addition to that video, I've built a few other Google Earth tutorials to help explain some features, including how to use historical imagery, elevation profiles and a few more.

Beyond that, Google has just released Street View imagery in South Korea, primarily in Seoul and Busan. As you can see from the screen shot below, the imagery in those is very sharp.

You can read more about the new South Korean Street View imagery on the Google Lat Long Blog.

If you still need to upgrade to Google Earth 6 to get the new Street View features, you can always download it (for free!) from earth.google.com.

13:51
Twitter Islands Appear on Google Maps
sur Google Maps Mania

Over the last few years the Centre of Advanced Spatial Analysis at UCL has created some interesting visualisations of data from Twitter. For example, CASA's, Tweet-o-Metre shows the current level of Twitter activity in a number of major cities around the world.

CASA's Interactive Tweetography Maps uses the Google Maps API to present a number of topographical maps of New York, London, Paris and Munich based on where in the cities Twitter users are most active. The contours on the maps show the density of tweets, with mountains showing the most active locations on Twitter.

Digital Urban has now taken the data from the London Tweetography Map and visualised it with the 3d game engine Lumion. They say they are still in the early stages of development but, I think you will agree, the results are already pretty amazing.

13:40
Satellite Export Reform Critical to U.S. National Security and Space Industrial Basegot geoint?
sur Planet Geospatial - http://planetgs.com

The Aerospace Industries Association (AIA) recently issued a study that underscores how the U.S. space industry is losing its competitive edge and risks falling short of future national security requirements unless government reforms our export control system and promotes the international competitiveness of U.S. industry. The report, Competing for Space: Satellite Export Policy and U.S. National Security, surveys U.S. satellite systems and components manufacturers about the challenges the space industrial base faces as a result of U.S. export policies. Among the adverse impacts on industry are loss of global market share and dampening of satellite component sales opportunities to sustain U.S. space technology leadership.

“A strong and globally competitive space industrial and supplier base is a major national security asset,” said AIA President and CEO Marion C. Blakey. “Reforming America’s export control system and promoting space exports will better serve our national security and bolster our economy and technological leadership.”

AIA’s survey found more than 70 percent of respondents incurred lost sales due to the current export control system. Commercial space system suppliers—who also often build critical components essential to our national security—face some of the most daunting challenges, with one firm citing annual losses of $5 million because of these impediments.

Be sure to check out the full report here.

12:41
New Malaria Risk Maps and Data and other Health GIS News
sur All Points Blog

In a study published in the Malaria Journal, a multinational team of researchers from the Malaria Atlas Project (MAP), funded mainly by the Wellcome Trust, present the results of a two-year effort to assemble all available data worldwide on the risk of Plasmodium falciparum malaria,... Continue reading

12:41
New Malaria Risk Maps and Data and other Health GIS NewsAll Points Blog
sur Planet Geospatial - http://planetgs.com

In a study published in the Malaria Journal, a multinational team of researchers from the Malaria Atlas Project (MAP), funded mainly by the Wellcome Trust, present the results of a two-year effort to assemble all available data worldwide on the risk of Plasmodium falciparum malaria,... Continue reading

12:40
Safety Map: Planning Ahead for Disaster
sur All Points Blog

You may have read about Depiction's Depiction Prep (APB coverage, press release). Safety Maps is another offering in the same space: a solution for coordinating in case of a disaster. But it's different. Why? 1) It has some serious geo/carto power behind it in its people: Safety... Continue reading

12:40
Safety Map: Planning Ahead for DisasterAll Points Blog
sur Planet Geospatial - http://planetgs.com

You may have read about Depiction's Depiction Prep (APB coverage, press release). Safety Maps is another offering in the same space: a solution for coordinating in case of a disaster. But it's different. Why? 1) It has some serious geo/carto power behind it in its people: Safety... Continue reading

12:31
Caractérisation des tissus urbains à partir de l’analyse structurelle des réseaux viaires
sur Cybergeo

Le réseau de rues structure l’espace urbain et dessine des zones urbaines généralement homogènes. Nous nous intéressons à l’étude de la morphologie urbaine à partir des réseaux (considérés comme éléments structurels des tissus urbains hors de toute considération fonctionnelle). Le travail sur un modèle de représentation géographique a permis de formaliser mathématiquement les réseaux par la théorie des graphes. Leur analyse permet de mettre en évidence des caractéristiques relationnelles non explicites a priori, ce qui permet l’enrichissement sémantique de ces données vectorielles.
L’objectif de ce travail est d’extraire, à partir des réseaux, des caractéristiques morphologiques des tissus urbains. Les propriétés structurelles du réseau viaire participent en effet à la caractérisation des tissus urbains par l’introduction d’effets de continuité, discontinuité, centralité, proximité, adjacence, etc.
Nous traitons un graphe urbain direct. Partant de ce graphe réel, nous construisons deux graphes artificiels (une triangulation de Delaunay et un arbre de recouvrement minimal « minimum spanning tree ») qui correspondent à des cas de réseaux extrêmes dans un continuum morphologique. L’analyse de ces trois graphes s’appuie sur un algorithme des plus courts chemins. Il s’agit de valuer chacun des nœuds ou segments au sens de la multi-centralité pour des chemins topologiques et métriques.
Les résultats permettent la détection, dans la zone urbaine d’étude, de structures morphologiques particulières correspondant à des entités urbaines sémantiques (axes structurants, lieux centraux, réseaux organiques, morphologies où prédominent les culs de sacs, etc.).

10:18
Gavin Fleming: Confessions of an ex-Windows user
sur Planet OSGeo

Education is undoubtedly the largest propaganda weapon in this consumerist-driven society. Having just completed matric, I realize that the first eighteen years of my life has been a period of unmitigated Windows brainwashing. It is a travesty to think how the capitalist greed of proprietary software has permeated my life for so long.

I recently began working at AfriSpatial with the intention of keeping myself busy during the holiday and earn some pocket money in the process. I was required to work in Linux which was a somewhat foreign OS to me and, afraid it would mysteriously hurt my fragile Windows PC, I installed Xubuntu OSGeo Live in a Virtual Box. At this stage life was treating me well…

One day, Windows decided to do an update which broke the harmony of my Virtual Machine by somehow preventing connection to the Internet. I wasted precious hours troubleshooting every conceivable error but this was to no avail. I had two choices: either forget about Linux and revert to the primitive ways of life before Linux or take a bold new step into a brighter future. So I actually had no choice and no more patience. I had to install Linux as a dual-boot. There was no other way.

This seemingly inconsequential event instigated a change; a purgation of conscience whose effects altered the kernel of my value system. I guess in hindsight this transmogrification was inevitable for an aspiring programmer.

Having joined the ranks of the converted Linux users, life has become so much brighter, so much more fulfilling, so much more. Gone are the days of tasteless architecture and graphics. The experience has been liberating. I blame schools for polluting their computer labs with expensive proprietary software when there are open source equivalents for just about everything (and often these ‘alternatives’ are better). Open source is undoubtedly the way forward. Anything Windows can do, Linux can do better. I am not trying to be antagonistic, just honest.

These are the confessions of an ex-Windows user.

Confessions of an ex-Windows user is a post from: AfriSpatial

10:18
Confessions of an ex-Windows userAfriSpatial
sur Planet Geospatial - http://planetgs.com

Education is undoubtedly the largest propaganda weapon in this consumerist-driven society. Having just completed matric, I realize that the first eighteen years of my life has been a period of unmitigated Windows brainwashing. It is a travesty to think how the capitalist greed of proprietary software has permeated my life for so long.

I recently began working at AfriSpatial with the intention of keeping myself busy during the holiday and earn some pocket money in the process. I was required to work in Linux which was a somewhat foreign OS to me and, afraid it would mysteriously hurt my fragile Windows PC, I installed Xubuntu OSGeo Live in a Virtual Box. At this stage life was treating me well…

One day, Windows decided to do an update which broke the harmony of my Virtual Machine by somehow preventing connection to the Internet. I wasted precious hours troubleshooting every conceivable error but this was to no avail. I had two choices: either forget about Linux and revert to the primitive ways of life before Linux or take a bold new step into a brighter future. So I actually had no choice and no more patience. I had to install Linux as a dual-boot. There was no other way.

This seemingly inconsequential event instigated a change; a purgation of conscience whose effects altered the kernel of my value system. I guess in hindsight this transmogrification was inevitable for an aspiring programmer.

Having joined the ranks of the converted Linux users, life has become so much brighter, so much more fulfilling, so much more. Gone are the days of tasteless architecture and graphics. The experience has been liberating. I blame schools for polluting their computer labs with expensive proprietary software when there are open source equivalents for just about everything (and often these ‘alternatives’ are better). Open source is undoubtedly the way forward. Anything Windows can do, Linux can do better. I am not trying to be antagonistic, just honest.

These are the confessions of an ex-Windows user.

Confessions of an ex-Windows user is a post from: AfriSpatial
9:05
Why LiDAR Has Become the �Go To� Technology for Utility Corridor MappingDirections Magazine - Top Stories
sur Planet Geospatial - http://planetgs.com

In December, Infotech Enterprises and DTS GIS participated in a Directions Magazine webinar to present a cost-effective solution to the NERC-mandated transmission line monitoring. This webinar sparked more good questions than could be answered during the allotted time. Here those answers are presented in detail.

More about: gis, google, lidar, utilities
9:05
Meet Your Colleagues: Dino RavnicDirections Magazine - Top Stories
sur Planet Geospatial - http://planetgs.com

Dino Ravnić is the co-founder and CEO of GIS Cloud, Ltd, and he is passionate about the present and future of GIS in the cloud. When asked to send us a picture of something he enjoys doing (fishing? hunting? ballroom dancing?), he gave us one of him working on GIS cloud capabilities for GPS.

More about: cloud, cloud applications, cloud gis, cloud gis apps, cloud solutions, colleagues, gis, gps
8:05
Socium: 1Spatial’s Online Data Validation Service Launches in USDirections Magazine - Top Stories
sur Planet Geospatial - http://planetgs.com

Socium, a subsidiary of 1Spatial, is launching an online data validation service in the United States on February1st. Directions Magazine interviewed Abbie Beckford, customer relations and marketing manager at Socium, to learn the details of the offering.

More about: cloud adoption, data validation, geographic data, geospatial technology, gis, software as a service

7:21
23/01/2012 : GeoConcept fait escale à Bordeaux pour présenter ses innovations SIG aux organismes publics
sur SIG la lettre : divers

23/01/2012 : GeoConcept fait escale à Bordeaux pour présenter ses innovations SIG aux organismes publics
- Communiqués de presse

6:31
GeoTools Team: AURIN Job Openings
sur Planet OSGeo
Many of the best known GeoTools examples are popular open source projects. If you follow our user list, you will know that GeoTools is used in a wide range of environments and settings.
With that in mind, we are happy to pass along a couple of job openings from Martin Tomko and the Australian Urban Research Infrastructure Network (AURIN):
- Data Architect
- Workflow e-Enabler
GeoTools experience is a plus; and tell Martin we sent you.
If you have a GeoTools related job post you would like us to pass along, please contact your nearest PMC member and we would be glad to help.
5:54
Nathan Woodrow: Improvements to the QGIS rule based rendering
sur Planet OSGeo
The rule based rendering in QGIS has just got a make over to improve in some of the old usability issues it used to have. Most of the improvements are UI related. If you would like to try them out you will need to grab a copy of the latest dev build (qgis-dev in OSGeo4W)

Main improvements include:
- Nested rules. If the parent rule evaluates to false none of the child rules are applied. This replaces the priority system in the old dialog.
- Disable symbol for rules. Rules with no symbol only act as a check for the child rules e.g nothing is rendered for the rule but child rules still are (unless also disabled).
- Drag and Drop rules (multi-selection is supported). Rules can be dragged onto other rules in order to nest them and set up a rendering hierarchy.
- Inline editing of rule labels, expressions, scales
- Overall tweaks to the dialog
The new rule dialog

As you can see in the screenshot, the rules are now organized in a tree which clearly expresses which rules should be applied and when.

In the example above, all the rules under the Sealed rule will only be applied if that rule is true. The old system would have you managing all rules in one big list and dealing with priorities in order to get the rules to apply right, the new dialog is a major improvement.

And the results! As you can see below, QGIS will only render the colored squares if the Sealed rule is true otherwise it just shows a green line.

The rules applied

The work was sponsored by Ville de Morges, Switzerland and developed by Martin Dobias. Thanks to both of them for these improvements.

More info:
- See Martin’s notes for a more detailed breakdown, and maybe some future stuff to come, of the improvements [lists.osgeo.org]
Note: As this is a brand new feature there might be some bugs, or things that don’t quite work as expected. If you do find something don’t hesitate to file a bug report at hub.qgis.org so it can be fixed, or at least known about.

Filed under: Open Source, qgis Tagged: FOSSGIS, gis, map-rendering, mapping, Open Source, osgeo, qgis, Quantum GIS, styling

5:54
Improvements to the QGIS rule based renderingNathans QGIS and GIS blog
sur Planet Geospatial - http://planetgs.com
The rule based rendering in QGIS has just got a make over to improve in some of the old usability issues it used to have. Most of the improvements are UI related. If you would like to try them out you will need to grab a copy of the latest dev build (qgis-dev in OSGeo4W)

Main improvements include:
- Nested rules. If the parent rule evaluates to false none of the child rules are applied. This replaces the priority system in the old dialog.
- Disable symbol for rules. Rules with no symbol only act as a check for the child rules e.g nothing is rendered for the rule but child rules still are (unless also disabled).
- Drag and Drop rules (multi-selection is supported). Rules can be dragged onto other rules in order to nest them and set up a rendering hierarchy.
- Inline editing of rule labels, expressions, scales
- Overall tweaks to the dialog
The new rule dialog

As you can see in the screenshot, the rules are now organized in a tree which clearly expresses which rules should be applied and when.

In the example above, all the rules under the Sealed rule will only be applied if that rule is true. The old system would have you managing all rules in one big list and dealing with priorities in order to get the rules to apply right, the new dialog is a major improvement.

And the results! As you can see below, QGIS will only render the colored squares if the Sealed rule is true otherwise it just shows a green line.

The rules applied

The work was sponsored by Ville de Morges, Switzerland and developed by Martin Dobias. Thanks to both of them for these improvements.

More info:
- See Martin’s notes for a more detailed breakdown, and maybe some future stuff to come, of the improvements [lists.osgeo.org]
Note: As this is a brand new feature there might be some bugs, or things that don’t quite work as expected. If you do find something don’t hesitate to file a bug report at hub.qgis.org so it can be fixed, or at least known about.

Filed under: Open Source, qgis Tagged: FOSSGIS, gis, map-rendering, mapping, Open Source, osgeo, qgis, Quantum GIS, styling
5:27
ILMF 2012 Day 2LiDAR News
sur Planet Geospatial - http://planetgs.com

Airborne LiDAR may be maturing after 15+ years, but in many ways it is still in the early stages of theoretical development. Continue reading →

Click Title to Continue Reading...

2:39
Street View Launched in South Korea
sur Google Maps Mania

Myeongdong Cathedral, Seoul

Google might not have maps in North Korea but it does now have Street View in South Korea.

Google Maps today introduced Street View for South Korea's two largest cities Seoul and Busan.

Via: Google LatLong

1:15
High Resolution Digital Aerial Imagery vs High Resolution Satellite Imagery – Part 2From High Above
sur Planet Geospatial - http://planetgs.com

(Click here to go to the article “High Resolution Digital Aerial Imagery vs High Resolution Satellite Imagery – Part 1“) (click images to enlarge) Location accessibility: Aerial Imagery: The reach of an aerial acquisition company is usually restricted to a specific area or country due to the fact that aircraft are based in a specific [...]
0:48
Kickstarter Balloon Mapping KitsMy Georamblings...
sur Planet Geospatial - http://planetgs.com

I pledged $85 to the Balloon Mapping Kit Kickstarter Project the other day.

Image via Kickstarter Balloon Mapping Kit page

As a ‘thank you’ for pledging I am expecting a full balloon mapping kit. Depending on the weather and delivery schedule what I am thinking about doing is coming up to Rutgers on a Saturday morning (possibly early in order to take advantage of light winds) and fly the balloon to collect some pictures. Hopefully it’ll ship early in the month of February and we can fly it in March while the trees don’t have any leaves. I still have to clear it with folks, but hopefully it won’t be an issue.

I was thinking about Passion Puddle, it is relatively clear of electric lines and other elevated obsturctions. Can anyone think of any other places on campus that would be good for balloon mapping?

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