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21 October 2019
16:27
gvSIG Team: Taller sobre gvSIG Desktop para principiantes en las 15as Jornadas Internacionales gvSIG
sur Planet OSGeo

El próximo 6 de noviembre de 2019, dentro de las 15as Jornadas Internacionales gvSIG que se celebrarán en Valencia (España), se impartirá un taller gratuito sobre gvSIG Desktop para principiantes, en el que cualquier persona que esté interesada en aprender a manejar la aplicación desde cero puede hacerlo.

Durante el taller se verá cómo crear mapas temáticos, con todos los elementos característicos (escala, norte, leyenda…), a partir de capas vectoriales, con su simbología y etiquetado. Se crearán además nuevas capas sobre las cuales se insertarán varias geometrías, digitalizando sobre una ortofoto. Se mostrará también cómo gestionar las tablas de atributos de dichas capas vectoriales, realizando selección de elementos de diferentes formas, y cómo conectar a capas remotas, que permite trabajar con una gran cantidad de cartografía ofrecida por las principales administraciones públicas sin tener que descargarla en local. También se explicará cómo trabajar con diferentes sistemas de referencia. Finalmente se aplicarán algunos geoprocesos.

Para asistir a los talleres debéis inscribiros tanto a las jornadas como a cada uno de los talleres en los que estéis interesados. Los talleres, como el resto de las jornadas, son totalmente gratuitos, pero tened en cuenta que las plazas son limitadas.

El taller se impartirá en la Escuela Técnica Superior de Ingeniería Geodésica, Cartográfica y Topográfica (UPV), en un aula con ordenadores, por lo que no necesitáis llevar el vuestro.

Podéis consultar el programa completo de las jornadas aquí:

[www.gvsig.com]

La inscripción a las jornadas se realiza desde el siguiente formulario:

[www.gvsig.com]

La inscripción a los talleres se puede realizar desde el siguiente apartado:

[www.gvsig.com]
16:09
GeoSolutions: MapStore Release 2019.02.01
sur Planet OSGeo
Dear Reader,

We are pleased to announce the release 2019.02.01 of MapStore, our flagship Open Source WebGIS product. The full list of changes for this release can be found here, but the most interesting additions are the following:
- Improvements to the layer filtering capabilities: improved the autocomplete functionality for attribute fields according to other filters applied
- Print tool: filters defined on layers are now applied to the final print too
- Layers list query parameter: now you can add layers to the map defining them in a new URL query paremeter, look at the documentation here
- Improved documentation: Attribute Table and Theme customization sections have been enriched
- Catalog tool: improved with autosearch
- Hardening: many bug fixes and performance improvements for both desktop and mobile
Within this minor release we have mainly focused our effort on the hardening by providing bug fixes on various components and functionalities: you can find the complete list on github here. We would like to take this opportunity to whet your curiosity giving some news on the ongoing works, several interesting functionalities are under construction! GeoStory Yes, it's true. In the first quarter of the next year you will be able to use MapStore to do geospatial storytelling: we named the new tool GeoStory. Using a Cascade layout there will be possible to add various kind of sections like Titles/Covers, Paragraphs and Media contents (images, videos and also maps!) with the possibility to also organize them with an Immersive layout to make your story fascinating! Below a little taste. [caption id="attachment_4687" align="aligncenter" width="1024"] Editor of GeoStory[/caption] [caption id="attachment_4688" align="aligncenter" width="1024"] View of an immersive section[/caption] Application Contexts and Viewer Composer An additional interesting feature will make MapStore even more powerful than now. The new year will bring the Application Context tool for MapStore that will allow administrators to define multiple viewer contexts in a three steps wizard with the possibility to:
- Define a custom name that will identify the viewer's context path inside the MapStore URL
[caption id="attachment_4704" align="aligncenter" width="559"] General settings - the context name[/caption]
- Define and configure which plugins need to be active inside the viewer
[caption id="attachment_4696" align="aligncenter" width="1018"] Select the viewer plugins[/caption]
- Configure the viewer map in terms of: default map scale/center, map CRS, layers and groups of layers in TOC, backgrounds (with the new admin UI that will be available in next major release!)
[caption id="attachment_4698" align="aligncenter" width="775"] Configure the map[/caption] Further ongoing and future work
For the next releases we have plans to work on the following (in sparse order)
- Further improvements to charts and dashboards (we have in plan to add some interesting capabilities like the possibility to define quick filters in dashboard, stay tuned!)
- Further improvements to the TOC drag&drop capabilities and settings
- Support for multiple map projections (expected in next major release 2019.03.00 of MapStore)
- Vector Tiles and MapBox Style support
Stay tuned for additional news on the next features!

If you are interested in learning about how we can help you achieving your goals with open source products like GeoServer, MapStore, GeoNode and GeoNetwork through our Enterprise Support Services and GeoServer Deployment Warranty offerings, feel free to contact us!
The GeoSolutions team,
11:00
CARTO Blog: PostGIS 3.0.0 Just Released
sur Planet OSGeo

Most of our users are aware that under the hood, CARTO runs on PostgreSQL and PostGIS. In fact, when it comes to contributing to PostGIS, we are the most active organizatio...
0:33
Narcélio de Sá: Atlas no QGIS – Automatizando a produção de mapas
sur Planet OSGeo
Em um post anterior eu ensino como construir um mapa de localização no QGIS. Nesse vídeo tutorial iremos explorar as funcionalidades do Atlas do QGIS para a produção de mapas em série.
O que é a função Atlas do QGIS?
Por vezes nos deparamos com situações onde precisamos criar muitos mapas com o mesmo modelo – geralmente um para cada unidade administrativa ou região de interesse. Criar esses mapas manualmente pode levar muito tempo e, fazer qualquer atualização nesses mapas pode se tornar uma tarefa árdua.

O QGIS possui uma ferramenta chamada Atlas que pode ajudá-lo a criar um modelo de mapa e publicar facilmente um grande número de mapas para diferentes regiões geográficas. Nesse exemplo iremos montar 3 mapas temáticos para cada município cearense, ao todo iremos produzir se uma só vez 552 mapas utilizando o atlas e algumas técnicas de estilo e layout.
Sumário:
- Apresentação: 0:00
- Configurando Temas: 1:44
- Criando compositor de impressão: 3:27
- Configurando tamanho da página no compositor: 3:47
- Adicionando mapa no compositor: 5:00
- Configurando Grid de Coordenadas: 5:57
- Adicionando Título ao mapa: 11:51
- Inserindo rosa dos ventos: 12:41
- Adicionando escala gráfica: 13:09
- Inserindo legenda: 15:20
- Adicionando escala numérica: 16:20
- Inserindo mapa de situação: 18:00
- Definindo temas para o mapa principal: 19:30
- Configurando tema do mapa de situação: 20:47
- Ajustando o enquadramento no mapa de situação: 22:40
- Configurando o Atlas: 25:40
- Configurando o título dinâmico: 27:55
- Ajustando tamanho da escala gráfica: 29:35
- Configurando posição da escala gráfica: 32:27
- Configurando a legenda dinâmica: 35:04
- Clonando configurações do layout para outros mapas: 36:30
- Configurando os temas de cada mapa: 37:25
- Ajustando a quebra de linhas na legenda dinâmica: 38:55
- Configurando posição da legenda : 41:40
- Configurando o nome do arquivo para exportação: 43:40
- Isolando a feição do atlas com configuração de estilo: 45:30
- Configurando escalas padrões para o projeto: 51:00
- Exportando os mapas: 56:00
Baixe os arquivos utilizados nesse tutorial
Projeto e Camadas: http://bit.ly/atlas_qgis

O que vocês acharam deste tutorial Atlas no QGIS - Automatizando a produção de mapas ? Aguardo seus comentários, dicas e sugestões. Não deixe de curtir nossa página no Facebook [Narcélio de Sá – Geotecnologias] , inscreva-se no nosso canal no Youtube e não esqueça de seguir nosso Twitter [@narceliodesa]

The post Atlas no QGIS – Automatizando a produção de mapas appeared first on Narcélio de Sá.
20 October 2019
2:00
PostGIS Development: PostGIS 3.0.0
sur Planet OSGeo

The PostGIS development team is pleased to release PostGIS 3.0.0.

This release works with PostgreSQL 9.5-12 and GEOS >= 3.6.

If you are using postgis_sfcgal extension, you need to compile against SFCGAL 1.3.1 or higher.

Best served with PostgreSQL 12 , GEOS 3.8.0 and pgRouting 3.0.0-beta.
Continue Reading by clicking title hyperlink ..
19 October 2019
13:01
gvSIG Team: gvSIG Projects: Google Summer of Code 2019
sur Planet OSGeo
Google Summer of Code (GSoC) is a programme that has been set up by Google to introduce students to open source software development. It links students to open source organisations such as OSGeo.

We are very happy that we had two great students working on gvSIG-GSoC projects with us this summer. GSoC 2019 has just finished, so here you can find out about our students and their projects.
Creation of new topological rules in gvSIG desktop
The project consists of the creation of three new topological rules in the gvSIG desktop toolbox. These rules are ” Must be disjoint ”, “Must not have dangles” and “Must be larger than cluster tolerance” that will help to verify the integrity of the spatial information, validate the representations and correct possible errors of the point, linear and poligonal geometries. Definitely, ensure the quality of geographic data with open source software.

Student: Héctor Tundidor

More info: [https:]]

Topological rules:
Repository: [https:]]
New rules for the Topology Framework in gvSIG Desktop
A new topology toolbox. This tool provides a group of integrity rules that check the validation of the geometries relationship in the data. A new topology data model can be created for each project. This toolbox provides a new set of tools to navigate, find and fix validation errors different from each topology rule. This project analyzes, implement and optimize a new set of rules that will be incorporated into this framework. This tools can be created in Java or in Jython through the Scripting composer tool.

Student: Mauro Carlevaro

More info: [https:]]

Topological rules:
Repository: [https:]]
18 October 2019
18:27
GeoSolutions: Meet GeoSolutions at INSPIRE Helsinki 2019
sur Planet OSGeo
Dear All, we are proud to announce that GeoSolutions will be present at the INSPIRE Helsinki 2019 Event which will be held in Helsinki from 22nd to 24th of October 2019.

GeoSolutions will be present with its INSPIRE Expert Nuno Oliveira and we will be happy to talk to you about our open source products, like GeoServer, Mapstore, GeoNode and GeoNetwork, as well as about our Enterprise Support Services and GeoServer Deployment Warranty offerings.

Our INSPIRE & GeoServer expert Nuno Oliveira is going to hold a workshop on GeoServer for INSPIRE, info below:
- INSPIRE, WFS3 and HALE Support in GeoServer: where are we?, Wednesday, 23 October 2019 from 9:00 to 12:30, Lounge Room
as well as another workshop on work performed with BRGM as follows:
- OGC ELFIE - Environmental Linked Features Interoperability Experiment, Wednesday, 23 October 2019 from 17:00 to 18:30, Lounge Room
If you are interested in learning about how we can help you achieving your goals with our Open Source products and professional services, make sure to visit us and talk to Nuno, he is a nice guy :).

See you in Helsinki!
The GeoSolutions team,
17 October 2019
16:00
Jackie Ng: Announcing: mapguide-react-layout 0.12.4
sur Planet OSGeo
Since porting the Maestro API over to target .net standard and making the library truly cross-platform, the SDK story of the Maestro API was left in an somewhat undefined state. If you wanted to use the Maestro API for your own applications, where do you start?

For many milestones since that migration, I have intentionally side-stepped from answering that question until now. For the next milestone of MapGuide Maestro we'll be re-activating the Maestro SDK story in the form of a separate repository that contains:
- Various code samples using the Maestro API
- Source code template for the "Local Native" connection provider that wraps the official MapGuide .net API with instructions on how to roll your own build of this provider
So as a result, I've been re-vamping some of the code samples, especially usage in your own web applications. The last time I touched this code, it was all ASP.net Web Forms, not exactly a shining example of how best to use the Maestro API in your own web application in our current year.
Obviously, this means we need code samples that demonstrate usage of the Maestro API in ASP.net core. So in the process of building this modern code sample, I found some interesting challenges.
Firstly, an ASP.net core application runs on its own webserver (Kestrel or IIS express). Our mapagent and built-in viewers are hosted on Apache or your local IIS. Even though in development they would both be on localhost, the web servers listen on different ports, meaning the same-origin policy is in play, complicating integration.
After some deliberation, I've decided that rather than try to embed the existing AJAX viewer in an iframe (which is what the old webforms sample did), I'll eat my own dogfood and just use the mapguide-react-layout as the viewer for the new asp.net core sample and set it up to talk to the existing mapagent of your MapGuide installation. This approach requires enabling CORS to make the mapagent accessible from a different origin. I figured out how this is actually done, which I'll show you in another blog post.
So with this main challenge addressed, I launched the work-in-progress asp.net core sample with the mapguide-react-layout viewer, and I get this problem.
For some context, this code sample does the following:
1. Create a new session id
2. Create a new web layout on-the-fly that sets up the task pane to point to our custom landing page of code samples
3. Save this web layout into a session repository and then render the MVC view instructing the embedded mapguide-react-layout viewer to load from this weblayout and session id
It turns out that mapguide-react-layout misinterpreted this initial state and tries to load the viewer as though the user manually refreshed the browser (the URL state recovery feature introduced in 0.11) and assumes that a runtime map already exists
This was clearly a bug and since I needed this viewer to behave properly in the context of a new code sample for a re-activated SDK story for the next milestone release of MapGuide Maestro, this has been the longest block of text to segue into ...
... Announcing a new bugfix release of mapguide-react-layout :)
This release also fixes the font icons so they aren't a scrambled mess and fixes some minor warnings around some of the libraries we're using.
Project Home PageDownloadmapguide-react-layout on npm
16 October 2019
11:00
CARTO Blog: CARTO's Data Observatory 2.0, now powered by Google BigQuery
sur Planet OSGeo

Today, at the Spatial Data Science Conference, we presented the recently launched Data Observatory 2.0 (DO). A new platform to discover and consume location data for spatia...
15 October 2019
16:36
Fernando Quadro: Curso Online de GeoServer em Dezembro
sur Planet OSGeo
Caros leitores,

Quero convidá-los a participarem do Curso Online de GeoServer que estarei ministrando pela GEOCURSOS. O objetivo do curso é que você aprenda a disponibilizar, compartilhar e editar dados geográficos na internet com o GeoServer.

No curso serão abordados tópicos como: configuração de dados, criação de estilo com SLD, padrões OGC, interface administrativa (web), visualização cartográfica com OpenLayers, REST API, Segurança, entre outros.

O curso ocorrerá entre os dias 03 e 12 de dezembro (terças, quartas e quintas) das 20:00 as 22:00 (horário de Brasília).

Aqueles que poderem divulgar para seus contatos, agradeço. Quem quiser saber mais informações sobre o curso, pode obtê-las nos seguintes links:
- Site do curso ( [www.geocursos.com.br] )
- Twitter ( [twitter.com] )
- Facebook ( [www.facebook.com] )
- Instagram ( [www.instagram.com] )
13:00
MapTiler: OpenStreetMap in WGS84 on MapTiler Cloud
sur Planet OSGeo

Global maps based on OpenStreetMap in WGS84 map projection are available on MapTiler Cloud via maps API. This complements the already existing maps in Web Mercator projection, which is de-facto the industry standard.
Why there are so many map projections?
Earth is not flat. Therefore, we need to mathematically solve the issue of projecting a globe into 2D space. It is possible to do in many ways, but all solutions, which are called map projections, have pros and cons.

Over time, Web Mercator become de-facto the industry standard. However, like any other map projections, it also has downsides: the most visible one is the distortion of sizes. Areas near poles are displayed much bigger while equatorial zone appears much smaller than in reality.

Various local/national coordinate systems were created because many maps were historically showing only limited territory. Therefore, they use projection which fits best to a specific territory. Local coordinate systems are still used by governments and required for official maps.

Some of the map projections. Image ©Tobias Jung CC BY-SA 4.0
Vector and raster OSM tiles in EPSG:4326
To fulfill specific needs, MapTiler Cloud is now adding base maps derived from OpenStreetMap in alternative coordinate systems. Base maps are available in WGS84.

https://api.maptiler.com/tiles/v3-4326/{z}/{x}/{y}.pbf?key={YOUR-OWN-KEY}

There is an OpenLayers 6 vector viewer code snippet, raster tiles rendered on-demand, WMTS service for use in desktop GIS software and static maps API.
Maps in Lambert, Rijksdriehoekstelsel and other national coordinate systems
From the local coordinate systems, French Lambert, Dutch Rijksdriehoekstelsel are available and many others will come soon!

MapTiler Cloud is also able to host maps in any coordinate system with EPSG code. Just upload your map in GeoPackage format or create one with the new MapTiler Desktop 10.2.

OpenStreetMap in French Lambert and Dutch Rijksdriehoekstelsel map projections
Free maps API with local coordinate systems
Start using maps in WGS84, Lambert or Rijksdriehoekstelsel for free via MapTiler Cloud.
14 October 2019
18:27
gvSIG Team: Program of the 15th International gvSIG Conference is now available
sur Planet OSGeo

The program of the 15th International gvSIG Conference is now available. It includes a a great number of presentations and several free workshops for both users and developers.

Conference will take place from November 6th to 8th at School of Engineering in Geodesy, Cartography and Surveying (Universitat Politècnica de València, Spain), and registrations have to be done from the form available at the event website.

Registration for workshops will be independent, and they will be able to be made from October 15th. All the workshops information will be published at gvSIG Blog soon.
18:21
gvSIG Team: Ya está disponible el programa de las 15as Jornadas Internacionales gvSIG
sur Planet OSGeo

El programa de las 15as Jornadas Internacionales gvSIG está ya disponible con una gran variedad de ponencias y varios talleres gratuitos, tanto para usuarios como para desarrolladores.

Las jornadas tendrán lugar del 6 al 8 de noviembre en la Escuela Técnica Superior de Ingeniería Geodésica, Cartográfica y Topográfica (Universitat Politècnica de València, España), y para poder asistir es necesario inscribirse previamente desde el formulario habilitado en la web del evento. Se recomienda no esperar al último momento, ya que las salas cuentan con un aforo limitado.

Para los talleres gratuitos se deberá realizar una inscripción independiente, que podrá realizarse a partir del día 15 de octubre. Toda la información relativa a los mismos la podréis encontrar en el blog de gvSIG.
13 October 2019
2:00
PostGIS Development: PostGIS 3.0.0rc2
sur Planet OSGeo

The PostGIS development team is pleased to release PostGIS 3.0.0rc2. This will be the final RC before release.

This release works with PostgreSQL 9.5-12 and GEOS >= 3.6

Best served with PostgreSQL 12 , GEOS 3.8.0 and pgRouting 3.0.0-alpha.
Continue Reading by clicking title hyperlink ..
11 October 2019
16:25
Oslandia: (Fr) Rechercher une adresse avec QGIS
sur Planet OSGeo

Sorry, this entry is only available in French.
10 October 2019
23:47
XYCarto: Experimenting with Hydrological Analysis using TauDEM
sur Planet OSGeo
Over the past few years, I’ve played around with developing ordered rivers networks for different projects. I am not an expert in hydrology, but I can get close for cartographic purposes. I am an expert; however, in asking for help from those who know best and I rely on a lot of very smart people to guide me on my journey.

Recently, I decided to put together a visualization of ordered rivers for New Zealand. I came across a very nice data set offered through the Ministry for the Environment via the Koordinates website and thought I’d like to put it to use.

The rivers vis project made me wonder if I could build this base dataset myself using some of the recently released elevation data sets via the LINZ Data Service. The short answer to my question is “sorta”. Doing it open source is not an issue, but building an accurate ordered river centerline network is another story. This is a task I cannot take on as a solo project right now, but I could do a little experimentation. Below, I’ll offer some of methods and things I learned along the way.

Tools and Data

The method I tested used TauDEM and a 1m DEM raster accessed from the LINZ Data Service. I down sampled the DEM to 2m and 5m resolutions and used small areas for testing. Finding and open source tool was easy. I sorted through a few available methods and finally landed on “Terrain Analysis Using Digital Elevation Models” (TauDEM). There are additional methods through GRASS and SAGA GIS. I chose TauDEM because I never used it before.

Method Tested

To my knowledge, there is no open source tool where a person can put in a DEM and get a networked rivers centerline vector out the other side. It requires a number of steps to achieve your goal.

The basic run down to process the DEM is to:
1. Fill sinks
2. Determine flow directions
3. Determine watersheds
4. Determine flow accumulation
5. Stream classification
6. Export to vector
TauDEM does require a few extra steps to complete the process, but these steps are explained in the documentation of the tool. It was more about keeping all my variables in the right places and using them at the right time. I recommend using the variable names TauDEM provides.

BASH script here
Click the arrow to the left to view the full BASH script below:
```
#!bin/bash

#Rough sketch for building river centerlines. Rasters have been clipped prior

BASEPATH=/dir/path/to/base

raster_list=$( find $BASEPATH -name "*.tif" )

taudem_outputs=/dir/path/to/outputs

reso=resolution_number

for i in $raster_list
do
```
```
	INPUT_RASTER=$i

	file_name=$( basename $i )

	strip_input_extension=$( echo $file_name | sed 's/.tif//' )

	reso_name=$taudem_outputs/${strip_input_extension}_${reso}res

	gdal_translate -tr $reso $reso -of GTiff $i $reso_name.tif

	fel=${reso_name}_fel.tif
	p=${reso_name}_p.tif
	sd8=${reso_name}_sd8.tif
	ad8=${reso_name}_ad8.tif
	ang=${reso_name}_ang.tif
	slp=${reso_name}_slp.tif
	sca=${reso_name}_sca.tif
	sa=${reso_name}_sa.tif
	ssa=${reso_name}_ssa.tif
	src=${reso_name}_src.tif

	ord=${reso_name}_strahlerorder.tif 
	tree=${reso_name}_tree.dat
	coord=${reso_name}_coord.dat
	net=${reso_name}_network.shp
	w=${reso_name}_watershed.tif 

	processed_input_file=$reso_name.tif

	#TauDEM Commands
	mpiexec -n 8 pitremove -z $processed_input_file -fel $fel

	mpiexec -n 8 d8flowdir -fel $fel -p $p -sd8 $sd8 

	mpiexec -n 8 aread8 -p $p -ad8 $ad8 -nc

	mpiexec -n 8 dinfflowdir -fel $fel -ang $ang -slp $slp

	mpiexec -n 8 areadinf -ang $ang -sca $sca -nc

	mpiexec -n 8 slopearea -slp $slp -sca $sca -sa $sa

	mpiexec -n 8 d8flowpathextremeup -p $p -sa $sa -ssa $ssa -nc

	mpiexec -n 8 threshold -ssa $ssa -src $src

	mpiexec -n 8 streamnet -fel $fel -p $p -ad8 $ad8 -src $src -ord $ord -tree $tree -coord $coord -net $net -w $w

done
```
The script is a rough sketch, but does get results.

Challenges in the Process

One major challenge for this project was the size of the input DEM and my computers available RAM. I work primarily off a laptop. It’s a good machine but no match for a proper server set up with some spacious RAM. My laptop struggled with the large hi-resolution DEMs, so I needed to down-sample the images and choose a smaller test area to get it to work.

Clip the tiff with gdal_translate -projwin and down sample with -tr
```
gdal_translate -tr xres yres -projwin ulx uly lrx lry input.tif output.tif
```
The second challenge came up because I used a bounding box to clip my test regions. I recommend not doing this and instead clip your regions using a watershed boundary. Having square shapes for your test regions will give you very inaccurate and unhelpful results. For example, major channels in your DEM will be cut at the edges of your raster. You will not get accurate results.

Clipping a raster using a shapefile, like a watershed boundary, can be achieved using gdalwarp.
```
gdalwarp –cutline input.shp input.tif output.tif
```
Results

I ran my process and QCed the results against Aerial Imagery and a hillshade I developed from the DEM. The first run gave me good enough results to know I have a lot of work to do, but I did manage to develop a process I was happy with. The tool did a great job, but the accuracy of the DEM was a little more challenging. It’s a start. I captured a good number of river channels despite my incorrect usage of a square DEM, learned a lot about how DEM resolution affects outputs, and gained knowledge around how to spot troublesome artifacts.

Img 1: River capture in well defined channel.

From this experiment, there are a few ideas I’d like to explore further:

1. Accuracy of the DEM. The particular DEM I worked with had a number of ‘dams’ in the flows. Notably, bridges, culverts, vegetation artifacts, and other general errors that caused water to flow in interesting directions. When working with a data set like this, I am curious how manage these artifacts.

Img 1: River diversion at road.

Img 1: River diversion at culvert or bridge.

2. How to go beyond borders. This analysis can be broken down by watershed, but it will be necessary to link the outflows of those watersheds to the next for accurate results.

Img 1: Flow not captured at edge.

3. As DEMs are released with better resolution, there is a need for scaled up computing power. The process needs a large amount of RAM. What is the best computational set up for capturing the largest area?

4. Did I do this correctly? I perform this task about once every two years and usually weekends when the surf is flat and the garden is weeded, so I am not an expert. There is a lot more research to be done to determine if I am using the tools to the best of their abilities.
11:00
CARTO Blog: Spatial Data Simplified: Introducing Data Observatory 2.0
sur Planet OSGeo

Data is an essential ingredient for spatial analysis—which is predicated on access to your own data, plus useful third-party data. In the end, spatial analysis is about put...
09 October 2019
11:00
CARTO Blog: CARTO and SafeGraph Team Up for Behavior Pattern Insights
sur Planet OSGeo

Today, perhaps more than ever before, people are on the move. Transitioning between roles as consumers, parents, employees, tourists, and more means making a lot of stops i...
08 October 2019
2:00
PostGIS Development: PostGIS 3.0.0rc1
sur Planet OSGeo

The PostGIS development team is pleased to release PostGIS 3.0.0rc1.

This release works with PostgreSQL 9.5-12 and GEOS >= 3.6

Best served with PostgreSQL 12 , GEOS 3.8.0rc2 and pgRouting 3.0.0-alpha.
Continue Reading by clicking title hyperlink ..
30 September 2019
9:52
Oslandia: QGIS Versioning now supports foreign keys!
sur Planet OSGeo
QGIS-versioning is a QGIS and PostGIS plugin dedicated to data versioning and history management. It supports :
- Keeping full table history with all modifications
- Transparent access to current data
- Versioning tables with branches
- Work offline
- Work on a data subset
- Conflict management with a GUI
QGIS versioning conflict management

In a previous blog article we detailed how QGIS versioning can manage data history, branches, and work offline with PostGIS-stored data and QGIS. We recently added foreign key support to QGIS versioning so you can now historize any complex database schema.

This QGIS plugin is available in the official QGIS plugin repository, and you can fork it on GitHub too !
Foreign key support TL;DR
When a user decides to historize its PostgreSQL database with QGIS-versioning, the plugin alters the existing database schema and adds new fields in order to track down the different versions of a single table row. Every access to these versioned tables are subsequently made through updatable views in order to automatically fill in the new versioning fields.

Up to now, it was not possible to deal with primary keys and foreign keys : the original tables had to be constraints-free. This limitation has been lifted thanks to this contribution.

To make it simple, the solution is to remove all constraints from the original database and transform them into a set of SQL check triggers installed on the working copy databases (SQLite or PostgreSQL). As verifications are made on the client side, it’s impossible to propagate invalid modifications on your base server when you “commit” updates.
Behind the curtains
When you choose to historize an existing database, a few fields are added to the existing table. Among these fields, versioning_ididentifies one specific version of a row. For one existing row, there are several versions of this row, each with a different versioning_id but with the same original primary key field. As a consequence, that field cannot satisfy the unique constraint, so it cannot be a key, therefore no foreign key neither.

We therefore have to drop the primary key and foreign key constraints when historizing the table. Before removing them, constraints definitions are stored in a dedicated table so that these constraints can be checked later.

When the user checks out a specific table on a specific branch, QGIS-versioning uses that constraint table to build constraint checking triggers in the working copy. The way constraints are built depends on the checkout type (you can checkout in a SQLite file, in the master PostgreSQL database or in another PostgreSQL database).
What do we check ?
That’s where the fun begins ! The first thing we have to check is key uniqueness or foreign key referencing an existing key on insert or update. Remember that there are no primary key and foreign key anymore, we dropped them when activating historization. We keep the term for better understanding.

You also have to deal with deleting or updating a referenced row and the different ways of propagating the modification : cascade, set default, set null, or simply failure, as explained in PostgreSQL Foreign keys documentation .

Nevermind all that, this problem has been solved for you and everything is done automatically in QGIS-versioning. Before you ask, yes foreign keys spanning on multiple fields are also supported.
What’s new in QGIS ?
You will get a new message you probably already know about, when you try to make an invalid modification committing your changes to the master database

Error when foreign key constraint is violated
Partial checkout
One existing Qgis-versioning feature is partial checkout. It allows a user to select a subset of data to checkout in its working copy. It avoids downloading gigabytes of data you do not care about. You can, for instance, checkout features within a given spatial extent.

So far, so good. But if you have only a part of your data, you cannot ensure that modifying a data field as primary key will keep uniqueness. In this particular case, QGIS-versioning will trigger errors on commit, pointing out the invalid rows you have to modify so the unique constraint remains valid.

Error when committing non unique key after a partial checkout
Tests
There is a lot to check when you intend to replace the existing constraint system with your own constraint system based on triggers. In order to ensure QGIS-Versioning stability and reliability, we put some special effort on building a test set that cover all use cases and possible exceptions.
What’s next
There is now no known limitations on using QGIS-versioning on any of your database. If you think about a missing feature or just want to know more about QGIS and QGIS-versioning, feel free to contact us at infos+data@oslandia.com. And please have a look at our support offering for QGIS.

Many thanks to eHealth Africa who helped us develop these new features. eHealth Africa is a non-governmental organization based in Nigeria. Their mission is to build stronger health systems through the design and implementation of data-driven solutions.
28 September 2019
12:43
QGIS Blog: User question of the Month – Sep’19
sur Planet OSGeo

After the summer break, we’re back with a new user question.

This month, we want to focus on documentation. Specifically, we’d like to know how you learn how to use QGIS.

The survey is available in English, Spanish, Portuguese, French, Ukrainian, and Indonesian. If you want to help us translate user questions into more languages, please get in touch on the community mailing list!
12:00
Jo Cook: FOSS4GUK 2019
sur Planet OSGeo

FOSS4GUK [https:] came and went a week or so ago, in Edinburgh, and to my mind it was a game-changer for our UK events. This is not going to be a detailed post about how great it was (yes it was great), and how good the venue was (also great), but a reflection on how it was different. For one, there were 250 attendees, which is a step up from previous events.
9:23
Jackie Ng: Announcing: mapguide-react-layout 0.12.3
sur Planet OSGeo

This bugfix release fixes a bug where the initial map view (if specified in a flexible layout) is parsed incorrectly, breaks the viewer as a result.

Project Home Page
Download
mapguide-react-layout on npm
2:00
PostGIS Development: PostGIS 3.0.0beta1
sur Planet OSGeo

The PostGIS development team is pleased to release PostGIS 3.0.0beta1.

This release works with PostgreSQL 9.5-12RC1 and GEOS >= 3.6

Best served with PostgreSQL 12RC1 and GEOS 3.8.0beta1 both of which came out in the past couple of days.
Continue Reading by clicking title hyperlink ..
27 September 2019
14:05
Fernando Quadro: Lançado o OpenLayers 6.0
sur Planet OSGeo

Prezados leitores,

Ontem, por volta das 22h Tim Schaub anunciou no GitHub do OpenLayers que a tão aguardada (pelo menos por mim) versão 6.0 está disponível oficialmente. Foram mais de 1.780 commits e 540 pull requests desde a versão 5.3.

Dentre as novidades, um recurso importante nesta versão é a capacidade de compor camadas com diferentes tipos de renderizador. Anteriormente, o mapa usava uma única estratégia de renderização, e todas as camadas do seu mapa tinham que implementar essa estratégia.

Agora é possível ter um mapa com camadas que usam diferentes tecnologias de renderização. Isso possibilita, por exemplo, que a camada Canvas (2D) seja composta junto com uma camada baseada em WebGL no mesmo mapa. Também é possível criar camadas com renderizadores personalizados. Portanto, você pode ter um mapa que use outra biblioteca (como d3) para renderizar uma camada e usar o OpenLayers para renderizar as outras camadas.

Além disso, a versão 6.0 inclui várias melhorias na renderização de vector tiles e deve consumir um quantidade menor de memória em geral. A versão também inclui vários recursos experimentais que ainda não fazem parte da API estável, como um novo renderizador baseado em WebGL e a função experimental useGeographic().

Esta versão inclui várias alterações incompatíveis com versões anteriores. Desta forma é importante ler as notas do release para verificar o que mudou a partir da versão 5.3.

Fonte: GitHub do OpenLayers
11:00
CARTO Blog: Spatial Leaders from Around the Globe Converge on SDSC19
sur Planet OSGeo

The 3rd annual Spatial Data Science Conference is just three weeks away and we couldn’t be more excited. Being held at Columbia University, this year’s iteration of the for...
10:00
From GIS to Remote Sensing: SCP Tips: Temporary Directory
sur Planet OSGeo

Tips about the Semi-Automatic Classification Plugin for QGISProcessing satellite images requires a large amount of disk space for temporary files (required for processing but deleted afterward). In case your system disk has low space available, you can change the SCP temporary directory to a different location with large disk space available.

For any comment or question, join the Facebook group about the Semi-Automatic Classification Plugin.
26 September 2019
11:28
Jackie Ng: MapGuide 4.0 Showcase: Transform all the things!
sur Planet OSGeo
Did you know that MapGuide uses CS-Map, a coordinate system transformation library with support for many thousands of coordinate systems out of the box? No matter how esoteric the map projection your data is in, MapGuide can re-project geospatial data in and out of it thanks to this library.

So it is quite a shame that for the longest time, MapGuide's powerful coordinate system transformation capabilities has zero representation in any part of the mapagent (the HTTP API provided by MapGuide).

To use MgCooordinateSystem and friends (the classes that wrap the CS-Map library) requires building a your own MapGuide application using the MapGuide Web API in one of our supported languages (.net, Java or PHP) and having your client application call into your own MapGuide application. There is nothing out of the box in the mapagent for a client map viewer application to do a basic HTTP request for transforming coordinates or requesting feature data to be transformed to a certain coordinate system.

For MapGuide 4.0, we've exposed the coordinate system transformation capabilities in APIs where it makes sense. Such as our SELECTFEATURES APIs for returning feature data. In my previous showcase post, I've shown how appending VERSION=4.0.0 and CLEAN=1 now gives you an intuitive GeoJSON result for this API.

The coordinates are based on the coordinate system of the data source it comes from. In the above screenshot, this is latitude/longitudes (code: LL84, epsg: 4326).

Suppose you want this data in web mercator (code: WGS84.PseudoMercator, epsg: 3857) so you can easily plonk this GeoJSON onto a slippy map with OpenStreetMap or your own XYZ tiles, which would also be in web mercator. With MapGuide 4.0, you can now also include a TRANSFORMTO=WGS84.PseudoMercator parameter to your HTTP request and that GeoJSON data will be transformed to web mercator.

The other major capability gap is that the mapagent offers no API over the mapagent for transforming a series of coordinates from one coordinate system to another. For MapGuide 4.0, there's now a dedicated API for doing this: The CS.TRANSFORMCOORDINATES operation.

With this operation, simply feed it:
- A comma-separated list of space-separated coordinate pairs (COORDINATES)
- The CS-Map code of the source coordinate system the above coordinates are in (SOURCE)
- The CS-Map code of the target coordinate system to transform to (TARGET)
- Your desired output format of JSON or XML (FORMAT)
- If you want JSON, whether you want the pretty JSON version (CLEAN)
Invoking the operation will give you back a collection of transformed coordinates.

A place where this new API is sorely needed is MapGuide Maestro, which previously required kludgy workarounds for transforming bounding boxes in Map Definitions (when adding layers in different coordinate systems, or re-computing extents):
- Tapping into the MgCoordinateSystem APIs of the local connection mode (if available)
- Using an alternate library for transformation with less reliability due to smaller range of supported coordinate systems.
The next milestone of MapGuide Maestro will now take advantage of this new API for transformation when connected to a MapGuide 4.0 or newer server.
11:00
CARTO Blog: Retail Revenue Prediction Models with Spatial Data Science
sur Planet OSGeo

As we round the corner into the latter half of 2019, the retail apocalypse continues. Business Insider is projecting more than 8,000 store closures in 2019, with major bran...
25 September 2019
11:00
CARTO Blog: Live Connections to Remote Databases with Federated Tables
sur Planet OSGeo

Getting your data connected is usually the first step in working with the CARTO platform. That data might be in files, databases, URLs, services, etc. The options are numer...
2:00
PyWPS team: PyWPS-4.2.2 Released
sur Planet OSGeo
PyWPS-4.2.2 Released
New bugfix-release of PyWPS is finally produced, with following bugfixes
- Fixed scheduler extension (#480).
- Fixed ValuesReference implementation (#471, #484).
- Fixed AllowedValue range (#467, #464).
- Add metalink support to facilitate outputs with multiple files (#466).
- Rename async to async_ for Python 3.7 compatibility (#462).
- Improve queue race conditions (#455).
- Numerous bug-fixes, additional tests and documentation improvements.
24 September 2019
11:17
gvSIG Team: Aprender SIG con cursos online gratuitos y software libre
sur Planet OSGeo
La componente geográfica es cada vez más reconocida como un atributo fundamental de la información. La realidad se expresa en el territorio. Herramientas que nos permitan gestionar el territorio nos permitirán gestionar mejor la realidad.

“Un sistema de información geográfica (SIG) es un conjunto de herramientas que integra y relaciona diversos componentes (usuarios, hardware, software, procesos) que permiten la organización, almacenamiento, manipulación, análisis y modelización de grandes cantidades de datos procedentes del mundo real que están vinculados a una referencia espacial, facilitando la incorporación de aspectos sociales-culturales, económicos y ambientales que conducen a la toma de decisiones de una manera más eficaz.

En el sentido más estricto, es cualquier sistema de información capaz de integrar, almacenar, editar, analizar, compartir y mostrar la información geográficamente referenciada. En un sentido más genérico, los SIG son herramientas que permiten a los usuarios crear consultas interactivas, analizar la información espacial, editar datos, mapas y presentar los resultados de todas estas operaciones.” (Wikipedia)

No todos los ingenieros utilizan SIG, pero es una herramienta cada vez más útil para más tipos de proyectos. Realiza alguno de estos cursos online gratuitos y mejora tus competencias. Empieza hoy mismo a formarte con gvSIG. ¡Vamos allá!
10:01
GeoServer Team: GeoServer 2.15.3 released
sur Planet OSGeo
We are pleased to announce the release of GeoServer 2.15.3 with downloads (zip|war), documentation (html) and extensions.

This is a maintenance release recommended for production. This release is made in conjunction with GeoTools 21.3 and GeoWebCache 1.15.3. Thanks to everyone who contributed to this release.

For more information see the GeoServer 2.15.3 release notes.
Improvements and Fixes
This release includes a number of improvements, including:
- Enhance mongodb schema generation
- Allow setting Entity Expansion limit on WFS XML Readers
- Promote authkey to extension (GSIP-174)
- Make MongoDB App-Schema schema rebuilder endpoints only rebuild schemas present in mappings.
- Promote status-monitoring module from Community to Extension
- Upgrade Jetty to 9.4.18.v20190429
A number of fixes are also present:
- WMS GetFeatureInfo formats text/html, text/plain, text/xml and application/vnd.ogc.gml (GML2) don’t handle time correctly
- Wrong URL scheme in layer preview (when using [HTTPS)]
- GetCapabilities on a single layer fails if a style is duplicated
- Renaming a layer doesn’t update Data Security rules
- SLD file renamed with REST PUT request when not needed
- GeoTIFF sources configured with GeoServer 2.14.x might not work in 2.15.x
- Style editor extension point not working
- NullPointerException on WFS ComplexGeoJsonWriter Link check
- Switching from System Status to Modules tab gives an error.
- Nodata is not made transparent after channelSelect+contrastEnhancement on multibands dataset
- WFS GeoJSONBuilder limits max nested level to 20
About GeoServer 2.15 Series
Additional information on the 2.15 series:
- Layer service settings allow WFS, WMS, WPS to be enabled on a layer by layer basis.
- GeoFence internal server extension a new approach to access control
- Style Editor supports auto-complete using control-space shortcut.
- SLD REST Service extension supports generation of thematic styles for vector and raster content.
- WPS vendor operation GetExecution Status and Dismiss, management of running processes.
- Java 11 can now be used, see Running on Java 11.
- JAI-EXT operations are now enabled by default.
- Release notes ( 2.15.2|2.15.1|2.15.0|2.15-RC|2.15-M0)
Java 11 comparability is the result of a successful code-sprint. Thanks to participating organizations (Boundless, GeoSolutions, GeoCat, Astun Technology, CCRi) and sprint sponsors (Gaia3D, atol, osgeo:uk, Astun Technology).
9:46
GeoTools Team: GeoTools 21.3 released
sur Planet OSGeo

GeoTools 21.3 released The GeoTools team is happy to announce the release of GeoTools 21.3: geotools-21.3-bin.zip geotools-21.3-doc.zip geotools-21.3-project.zip geotools-21.3-userguide.zip maven repository This release is a stable release and is recommend for new development and production systems. This release is made in conjunction with GeoServer 2.15.3. Improvements XS DateTime
2:46
Jackie Ng: Now *THIS* is progress!
sur Planet OSGeo

So in my previous post, it turns out I had mis-configured the tile grid property of the OL vector tile source in this example, namely the tile size. Is it not the default 256x256, but 4096x4096.

Once I fixed the tile size, everything beautifully snaps into place!
2:12
Jackie Ng: It is still progress
sur Planet OSGeo

Even if the mapbox vector tiles are completely out of alignment, progress is still progress.
I'm seeing stuff!
23 September 2019
16:16
gvSIG Team: Asociación gvSIG en ECOFIRA / EFIAQUA
sur Planet OSGeo

Del 1 al 3 del próximo mes de octubre, Feria Valencia acoge una nueva cita de Ecofira y Efiaqua, dos certámenes de referencia en torno a la gestión sostenible y el medio ambiente que este año ponen el foco en los servicios urbanos y la eficiencia tecnológica. En este sentido, desde ambas ferias han propuesta una completa agenda de conferencias y actividades. Así, la agenda de Ecofira abordará aspectos como la economía circular, el cambio climático o los avances tecnológicos para las ciudades inteligentes. Por su parte, Efiaqua ha programado una ambiciosa agenda en torno a las directivas y gobernanza del agua, la gestión sostenible del agua en el municipio o la digitalización en el sector. Además, junto a ambos eventos, también se celebrará Iberflora, el gran evento profesional del sector verde en Europa y referente entre las ferias de jardinería.

Durante el evento, en la zona showcasing, la Asociación gvSIG estará presente en el stand de AVAESEN, donde se podrá consultar cualquier duda sobre las soluciones gvSIG y ver demostraciones referentes al uso de los Sistemas de Información Geográfica en la gestión municipal y su importancia en las denominadas Ciudades Inteligentes o Smart Cities. Geomática libre al servicio de todos.
15:12
GeoSolutions: GeoSolutions presentations from FOSS4G 2019!
sur Planet OSGeo

Dear Reader,

we are putting together in this post all presentations that were given by our staff during this year FOSS4G in Bucharest, Romania.

Here is the complete list. Enjoy!
State of GeoServer 2019 GeoServer feature frenzy GeoServer WFS3: introduction to the RESTful, schemaless, JSON first download service Creating Stunning Maps in GeoServer, with SLD, CSS, YSLD and MBStyles Standing up a OSM clone with GeoServer and CSS Crunching Data In GeoServer : Mastering Rendering Transformations, WPS Processes And SQL Views. Mapping the world beyond Web Mercator Using the OGC Web Processing Service (WPS) to move business logic to the server State of JAI Introduction to MapStore, mashups made simple One Geonode, many Geonodes State of GeoNode
If you are interested in learning about how we can help you achieving your goals with open source products like GeoServer, Mapstore, GeoNode and GeoNetwork through our Enterprise Support Services offer, feel free to contact us!
The GeoSolutions team,
12:52
FOSS4G 2019 Bucharest: This sort of question is generally asked in interviews it doesn’t matter what sort of job’s majority.
sur Planet OSGeo

They’re an art form packed with thoughts and imagination. Cause and effect yet another major facet to a lot of types of writing. Summarize the ideas within the paragraph. Carrying this out is an exceptional approach to search for knowledge. If s O, subsequent specified steps can empower the reader find the essential concept, hence improving comprehension. After the student understands the concept of complete and particular phrases, they can better locate an overall assertion within the sentence. No matter your objective, just carry on creating. That’s my advice to you individually if you’re a teacher who does like to cease.
You first need to show (show) the object you’re talking about.
Punctuation, about the opposite palm, may surely alter the significance of the phrase. Many additional examples might be cited here that handle the nature of the kid’s liberty. Write a reply to that query. I’m heading to become a history teacher. It may become your instructor, your family or pals, or just yourself. In my private observation for a instructor as well as a parent, children who like to read books are somewhat more educated than kids who r read publications in any way. Make reading or narrative time part of each day. Persuasive writing is an essential ability for learners to learn. Children’s literature might be missed as a crucial text for ecology instruction.
Jimmy’s amazing cover letter founder is just a portion of the fee.
Composing abilities additionally incorporate firm. Children which might ben’t sufferers aren’t allowed within the assessment areas and aren’t permitted to be left without adult supervision within the waiting areas. The paragraph isn’t a overview of what it’s that you’re authoring, rather, it is in support of what it’s that you’re authoring. For a common 5 paragraph composition, you are going to require a minimum of three rationales, or elements to your own response. First, let’s seem at the start of the article. For some thing to become a superior convincing article topic, it must be an controversial issue. Informing assertions are frequently way too obscure due to their own fictional great.
The crew uncovered 50 eggs to rays for times of five minutes to 30minutes.
Later, the exact same will be right of documents theywill have to compose. Sole story to begin essay. With the appropriate content that’s arranged rationally, the audience may certainly be funnelled into arriving at the similar decision that you would be presenting within the last region of the essay. There are lots of excellent issues for this particular sort of composition. Array article from all varieties of hbs. Looking at what you have composed until now, make a listing of apapers service terms it is possible to research to strive to get posts on your own document. It’s the type of paper you’d compose before composing a option papers. For instance, it is possible to select any item and find out how several adjectives the youngster can create in describing it. Generally, Part papers you’ve got.
At the same period the tone of the literature used should be according to the desires of the task.
The most contentious types of work include the military usage of youngsters along with child prostitution. It can take a while for the student to function alone to uncover the major thought. I’m fumbling with the thought of returning to college to get a history degree. This really is a great brooding exercise for learners to assess independently if they’re composing nicely – created sentences. Child labour contains working kids that are below a particular minimum age. Other kids should do tedious and repetitive jobs including assembling boxes or polishing shoes. It is not possible for them to improve also within their professors if they’re not supplied the scope to relish a remainder from the grayscale characters. This isn’t for you to actually review what you’ve read. Ending by means of your dissertation thought.
20 September 2019
22:24
Markus Neteler: PDAL 2.0.1 packaged for Fedora including vertical datums and grids
sur Planet OSGeo
The latest PDAL release (Point Data Abstraction Library, [www.pdal.io] , version 2.0.1) has now been packaged for Fedora Linux.
I have cleaned up the dependencies (also the annoying former installation bug with PDAL-devel has been resolved).

The installation is as simple as this (the repository is located at Fedora’s COPR):
```
# enable and install PDAL
sudo dnf copr enable neteler/pdal
sudo dnf install PDAL PDAL-libs PDAL-vdatums

# if you want to compile other software like GRASS GIS with PDAL support, then you also need
sudo dnf install PDAL-devel
# Now, run PDAL:
pdal-config --version
pdal --help
```
Enjoy!

The post PDAL 2.0.1 packaged for Fedora including vertical datums and grids appeared first on GFOSS Blog | GRASS GIS and OSGeo News.
20:11
Jackie Ng: MapGuide 4.0 showcase: JSON that's easier to work with.
sur Planet OSGeo
If you've ever worked with the [HTTP-based] mapagent API, you should be aware that most of the APIs responses in the mapagent generally come back in 2 forms:
- XML
- JSON
However, if you ever look at the JSON responses, you'll be accustomed to dealing with ugly monstrosities like this (eg. A JSON version of a Layer Definition):

Or heaven forbid, you want to explore the structure of a Feature Source and so you need the JSON version of a FDO feature schema:

Good luck trying to parse and comprehend that!
Why is the JSON so horrible? The answer is XML is the canonical response format for all non-image/binary mapagent operations (MapGuide Open Source's inception was in 2004 after all, when XML was king and JSON probably didn't exist yet), so the JSON version is a literal translation of whatever its XML form would be. While there is nothing wrong with that, the way this JSON translation was done is the most lowest-common-denominator approach:
- Treat every XML element as a JSON array.
- Treat every XML element text body as a JSON string.
As a result, as evidenced by the above screenshots that means that all JSON responses are nothing but a series of JSON arrays (of possible more JSON arrays) of strings.
But there is a reason for such laziness. The JSON translation knows nothing about the content model of whatever XML it's trying to translate, so it really has no choice in the matter. Such content models are defined in the various XML schemas that are shipped with MapGuide. But working with XML schemas in C++ sounds like a nightmare in and of itself, so there is another way to determine the content model: Just manually hard-code the list of all possible XML xpaths that are:
- Repeating (ie. Should be converted to actual JSON arrays)
- Not a string
Using the existing XML schemas as the reference, this list only required a one-off painstaking translation of this xpath list. The end result isn't exactly pretty, but it gets the job done. With this hard-coded list now in our JSON converter, it means we now have the means to output JSON that is much easier to comprehend and intuitive!
For MGOS 4.0, for any mapagent operation that returns JSON, if you specify VERSION=4.0.0 and CLEAN=1 in the request parameters you will now get a JSON format that actually makes sense!

Now for some mapagent operations, finally having a "clean" JSON version still isn't enough because the clean JSON response is still mostly clunky and unusable. Consider the FDO feature schema example. The original JSON version is an unworkable monstrosity, and the "clean" version would've just been lipstick on a pig because at the end of the day, it is still a literal JSON translation of an XML schema!

So as a result, for this set of APIs, a new simpler XML response format is introduced for schema and class definitions by including SIMPLE=1 to your VERSION=4.0.0 request:

From which its JSON equivalent (I hope you'll agree) is much more easier to comprehend!

There is another class of operations that have received a similar treatment. Operations that return geometric/feature data. Consider the XML form of selecting features (the ugly schema section collapsed for brevity):

This is what the "ugly" JSON version would've looked like (schema parts again collapsed for brevity).

Even if we prettied this up with content-model-aware conversion, the JSON is still mostly unremarkable. Because, if we're serving JSON feature data out to clients, then there's really only one format we should care about supporting:
GeoJSON
GeoJSON is the de-facto format for serving out JSON-based feature data, and is universally supported by any mapping/GIS product/tool/library/viewer worth a damn, so if we have the opportunity for MapGuide to return clean JSON data for geometries/features, forget about the literal conversion from XML approach! Just go ahead and make GeoJSON output a first-class citizen
So for MGOS 4.0, if you run any mapagent operation that returns geometry/feature data and you ask for VERSION=4.0.0 and CLEAN=1 you will now get GeoJSON!

Which (due to GeoJSON's ubiquity) can be plugged directly into your web mapping library of choice for display if you so choose.
If you are building your own server-side MapGuide applications with the MapGuide Web API, there's a new MgGeoJsonWriter class is available for you to convert MgFeatureReaders to GeoJSON data.
With MapGuide Open Source 4.0, JSON support is no longer an afterthought, it's actually usable!
13:00
longwayaround.org.uk: MapServer PostGIS Performance
sur Planet OSGeo
Recently I was looking at improving the performance of rendering a Space Syntax OpenMapping layer in MapServer. The openmapping_gb_v1 table is in a PostGIS database with an index on the geometry column. The original MapServer DATA configuration looked like this:
```
DATA "wkb_geometry from (select meridian_class_scale * 10 as line_width, * from openmapping …
```
10:00
From GIS to Remote Sensing: SCP Tips: Classification previews
sur Planet OSGeo

Tips about the Semi-Automatic Classification Plugin for QGISActivating the Classification preview pointer you can display a preview with a left click on the image. Also, with a right click you can display the Algorithm raster that represents the minimum spectral distance (calculated by the algorithm) of a pixel signature to any training spectral signature. Dark pixels are more distant to any spectral signature and possibly a new ROI should be collected for these pixels.

For any comment or question, join the Facebook group about the Semi-Automatic Classification Plugin.
9:39
Jackie Ng: Announcing: mapguide-react-layout 0.12.2
sur Planet OSGeo

This bugfix release plugs remaining localization gaps in the measurement tool and tooltips for various OpenLayers controls we are using.

Project Home Page
Download
mapguide-react-layout on npm
19 September 2019
12:30
Fernando Quadro: Lançado o GeoServer 2.16.0
sur Planet OSGeo
A equipe do GeoServer disponibilizou ontem a versão 2.16.0 (estável). Essa versão conta com correção de bugs além das melhorias citadas abaixo:
Fonte: GeoServer Blog
18 September 2019
18:47
GeoServer Team: GeoServer 2.16.0 released
sur Planet OSGeo
We are happy to announce the release of GeoServer 2.16.0. Downloads are available (zip and war) along with docs and extensions.

This is a GeoServer release candidate made in conjunction with GeoTools 22.0.
Faster map rendering of complex styles
If you have very complex styles, with lots of rules and complex filtering conditions you’ll be pleased to hear that GeoServer 2.16.x can locate the right symbolizer much quicker than previous versions. This is useful, for example, in the GeoServer home page demo map, rendered from OSM data using a OSM Bright clone built with the CSS module.
The GeoSolutions offices in Massarosa (Viareggio), Italy, in the geoserver.org demo map Dynamic densification on reprojection
GeoServer has always reprojected data “point by point”, this typically caused long lines represented by just two points to be turn into straight lines, instead of curves, as they were supposed to.

In GeoServer there is a new “advanced projection handling” option in WMS enabling on the fly densification of data, the rendering engine computes how much deformation the projection applies in the area being rendered, and densifies the long lines before reprojection, resulting in eye pleasing curves in output. See a “before and after” comparison here:
Reprojection, original point by point versus densified mode in 2.16.x EPSG database updated to v 9.6
Thanks to the sponsorship of GeoScience Australia the EPSG database has been updated to version 9.6, including roughly a thousand more codes than the previous version available in GeoServer. The code has also been updated to ensure the NTv2 grid shift files between GDA94 and GDA2020 work properly.
Complex GeoJSON output changes
GeoServer WFS can already output GeoJSON out of complex features data sources (app-schema). However, the output can be less than pleasing at times, the following improvements have been made:
- The property/element alternation typical of GML is preserved, causing deeply nested and ugly to look structures. Not everyone loves to write a “container.x.x” access to reach the x value, with 2.16.x the output skips one of the containers and exposes a direct “container.x” structure
- XML attributes are now turned into plain JSON properties, and prefixed with a “@”
- Feature and data types are not lost anymore in translations, preserved by a “@feaureType” and “@dataType” attributes
- Full nested features are encoded as GeoJSON again, keeping their identifiers
Thanks to the sponsorship of the French geological survey – BRGM and the French environmental information systems research center – INSIDE, the 2.16.0 output now looks as follows:
```
{
  "type": "FeatureCollection",
  "features": [
    {
      "type": "Feature",
      "id": "0001000001",
      "geometry": {
        "type": "Point",
        "coordinates": [51.0684, 1.4298]
      },
      "properties": {
        "@featureType": "Borehole",
        "identifier": {
          "value": "BSS000AAAA",
          "@codeSpace": "http://www.ietf.org/rfc/rfc2616"
        },
        "bholeHeadworks": [
          {
            "type": "Feature",
            "geometry": {
              "type": "Point",
              "coordinates": [51.0684, 1.4298]
            },
            "properties": {
              "@featureType": "BoreCollar",
              "collarElevation": {
                "value": -32,
                "@srsName": "http://www.opengis.net/def/crs/EPSG/0/5720",
                "@srsDimension": "1",
                "@uomLabels": "m"
              }
            }
          }
        ],
```
Status Monitoring module promoted to Core
The Status Monitoring module has been promoted to core, and is now included in the GeoServer status page by default!

This module adds a new tab to the Server Status page, with system statistics so that you can monitor the system which GeoServer is running on from the Web GUI.
Authentication key module graduated to extension
The “Authkey” module has been graduated to extension, allowing security unaware applications to access GeoServer. Reminder, in order to keep the system secure the keys should be managed as temporary session tokens by an external application (e.g. MapStore can do this).
PostGIS data store improvements
The PostGIS data store sees a few improvements, including:
- TWKB encoding for geometries for all WMS/WMTS requests, reducing the amount of data travelling from the database to GeoServer
- The JDBC driver used to transfer all data as ASCII, the code was modified to allow full binary transfer when prepared statements are enabled (driver limitation, binary can only be enabled in that case)
- SSL encryption control, the driver defaults to have it on with a significant overhead, if the communication is in a trusted network the encryption can be disabled with benefit to performance
- Improved encoding of “or-ed” filters, which now use the “in” operator where possible, increasing the likeliness that an eventual index o nthat column will be used
- Native KNN nearest search when using the “nearest” filter function
OGC/GDAL stores updated to GDAL 2.x
The OGR datastore as well as the GDAL image readers have been updated and now work against GDAL 2.x official binaries, without requiring custom builds any longer.

The OGR datastore can open any vector data source and, in particular, it can use the native FileGBD library when using Windows. It’s also interesting to note that it can open Spatialite files, quite important now that the direct Spatialite store is gone.
Azure GWC blobstore
Tiles can now be stored in Azure blob containers, increasing GWC compatibility with cloud environments, after the already existing S3 support.

A warning though, Azure does not provide, unlike S3, a mass blob delete API, so on truncate GWC will have to go and remove tiles making a DELETE request for each (using parallel requests of course).
SLDService community module graduated to extension
The SLDService community module allowed to generated classified maps of vector data based on criterias such as equal interval, quantiles and unique values.

The same module has now graduated to extension, providing also data filtering based on standard deviation, equal area classification, and offering all the same services on raster data as well (with automatic sub-sampling when the source image is too large).

For example, creating a five classes quantile classification based on states persons over a custom color ramp can be achieved using the following:
```
curl -v -u admin:geoserver -XGET
  [localhost:8080] 
```
New Community Modules
- WMTS styling module, which adds the ability to get/put a style on a per layer basis using restful resources exposed as ResourceURL
- OGC API module, including implementations of the new OGC Web APIs for Features, Tiles and Styles (more to come in the upcoming months). Mind, these are cool but also prototypes based on specifications still in draft form, we have warned you, the API will likely have a few rounds of changes still before it stabilizes.
- MapML community module. See this video for step by step installation instructions.
Other assorted improvements
There are many improvements to look at in the 2.16.0 release notes, as well as in the 2.16-RC release notes. Cherry picking a few, we hav:
- Integrated GWC fails to seed layers if any data security is configured
- Default Datastore Parameters panel does not allow [https:] protocol values
- Parameter Extractor plugin cannot mangle URL correctly if Monitor plugin is installed
- Permit extensibility of Common Formats from Layer Preview page
- Update name to id in OGC API Collection
- Add support for configuring ACL in gwc-s3 community module
- Enhance mongodb schema generation
About GeoServer 2.16
GeoServer 2.16 has been first released in September 2019.
- Release notes (2.16.0 and 2.16-RC)
18:06
GeoTools Team: GeoTools 22 released
sur Planet OSGeo

The GeoTools team is pleased to announce the release of GeoTools 22.0: geotools-22.0-bin.zip geotools-22.0-doc.zip geotools-22.0-userguide.zip geotools-22.0-project.zip This release candidate is also available from our Maven repository, and is made in conjunction with GeoServer 2.16.0. This release includes a various major changes. Module Updates JDBC Hana module moved to
12:30
Fernando Quadro: Melhorias no armazenamento de dados PostGIS do GeoServer
sur Planet OSGeo
A versão 2.16 do GeoServer está trazendo diversas melhorias, entre elas está o armazenamento de dados PostGIS, incluindo:
- Codificação TWKB para geometrias para todas as solicitações WMS/WMTS, reduzindo a quantidade de dados que trafegam do banco de dados para o GeoServer
- O driver JDBC usado para transferir todos os dados como ASCII, o código foi modificado para permitir a transferência binária completa quando as instruções preparadas estão ativadas (limitação do driver, o binário pode ser ativado apenas nesse caso)
- Controle de criptografia SSL, o driver padrão pode ter uma sobrecarga significativa; se a comunicação estiver em uma rede confiável, a criptografia poderá ser desativada com benefícios para o desempenho
- Codificação aprimorada de filtros “or-ed”, que agora usam o operador “in” sempre que possível, aumentando a probabilidade de que um eventual índice dessa coluna seja usado
- Pesquisa nativa KNN ao usar a função de filtro “mais próximo”
Fonte: GeoServer Blog
2:20
GeoServer Team: Join Me in Funding an Important GeoServer Initiative
sur Planet OSGeo
TLTR CITE Automation Funding Raised vs Target
GeoServer Project has been at the forefront of the standards-based geospatial web since 2001. Meanwhile, it’s been some years since GeoServer has been formally certified OGC-compliant. There is an opportunity to permanently improve how this is done by boosting a crucial component of the GeoServer software build infrastructure.

OSGeo has put forth an initiative and provided an initial budget towards regaining OGC certification status and making automatic certification a feature of the GeoServer software build process. The initiative and the implementation plan are outlined here. Once implemented, the GeoServer build server will continuously execute against OGC’s CITE TEAM Engine test suite, resulting in an ongoing certification status check with every release.

The Open Source Foundation has arranged to submit generated test results each year to reestablish formal certification. This will allow GeoServer to display the appropriate OGC logos on our website.

To help fund this initiative, please donate via PayPal or credit here. Please consider that your contribution will make a mark on every release and every copy of GeoServer which is downloaded thousands of times per week worldwide.

7 Reasons Why This Matters
- Integrators and implementers will gain increased confidence that GeoServer-based products and solutions remain interoperable with other software in the OGC standards ecosystem
- Added qualification for government procurements requiring proof of OGC certification
- Quality assurance via early detection and remediation of variances impacting interoperability
- Overall improvement of software reliability and decreased integration friction
- Streamlining practical validation of emerging standards in the OGC
- Free, standards-compliant software is indispensable in driving adoption, education, and innovation around geospatial data and standards-based system integration
- Ensuring that GeoServer remains a stable, trusted, open-source component
On a Personal Note
I’ve come to rely on GeoServer for a multitude of solutions and development projects. Being able to use this constantly evolving software afforded me a lot of self-sufficiency and creative freedom for the past 15 years, ever since GeoServer was a small software library. It doesn’t take a lot to appreciate that this has been made possible by the efforts of a small, committed, international community. While at OpenGeo and Boundless (recently acquired by Planet), I had a distinct honor and a pleasure to work closely with this community, making many lasting friendships along the way.

Helping fund this initiative is an easy and meaningful way to lend tangible support to the project team that remains committed to advancing GeoServer. I’m delighted to know that my contribution will help fund the planning and development activities necessary to implement this feature.

How to contribute using PayPal or credit card:

Please join me and make your contribution! Also, please take a minute to Like, Share, retweet and reach others with this message. To become a corporate sponsor, please follow this link.

Thanks in advance you for your thoughtfulness and support.

Ilya Rosenfeld
17 September 2019
14:57
OTB Team: OTB @ FOSS4G 2019 in Bucarest !
sur Planet OSGeo

The FOSS4G conference took place in Bucarest, for one week (26th – 31th of August). This event is the right place to meet people from the Open Source geospatial community ! It gathered more than 1000 participants, coming from 114 different countries… Two days of training sessions During the first two days, we had the […]
12:30
Fernando Quadro: Módulo de Monitoramento de Status agora é padrão no GeoServer
sur Planet OSGeo

O módulo Monitoramento de Status foi promovido para o core e agora está incluído no GeoServer por padrão! Caso você não o conheça, este módulo adiciona uma nova guia à página Status, com estatísticas do sistema operacional para que você possa monitorar o sistema em que o GeoServer está sendo executado a partir da Interface Web.

Caso você não conheça sobre o monitoramento de status, escrevi um post detalhado sobre ele, que vou deixar o link a seguir:

– Monitoramento de status no GeoServer

Fonte: GeoServer Blog
16 September 2019
14:15
gvSIG Team: gvSIG Projects: Graphical management of the CAP (Common Agricultural Policy) applications with gvSIG Online
sur Planet OSGeo

The Common Agricultural Policy (CAP) is the agricultural policy of the European Union. It implements a system of agricultural subsidies and other programs. The number of grants processed in the Valencian Community is about 62,000 and it is equivalent to more than 140 million euros.

Regulation (EC) No 1593/2000 of July 17, 2000 obliges the creation of a Digital Graphic System for Agricultural Plots Identification. This is the origin of the SIGPAC, Agricultural Plots Geographic Information System, which allows geographically identify the parcels declared by farmers in any aid scheme related to the area.

AGRORED is the computer application used in the Generalitat Valenciana (Valencian regional government) to manage requests for these CAP grants. All alphanumeric information was recorded in AGRORED. A very basic graphical application, called CROQUISWEB, was available and presented several problems, such as not working with topological rules (the plots could overlap, the polygons could not be closed, etc.) and it was complicated for inexperienced users.

There is a change of scenario due to the publication of Royal Decree 1075/2014, which indicates that the graphic declaration becomes mandatory in 2018 for all aid applicants. CROQUISWEB did not have the necessary features to work with graphic data, so a new solution based on the gvSIG Online open source software, called LIBRA, was developed. LIBRA was integrated with AGRORED, it is easy to use, powerful (thousands of users connect simultaneously) and it has all the necessary GIS functionalities, including topological validations.

Currently, all applications related to agriculture in the Generalitat Valenciana are being migrated and developed on the same gvSIG Online platform.

12:30

Fernando Quadro: Melhorias no GeoJSON do GeoServer

sur Planet OSGeo

O serviço WFS do GeoServer já pode gerar o GeoJSON a partir de fontes de dados de recursos complexos através do app-schema. No entanto, a saída pode não ser agradável em alguns casos, devido a isso as seguintes melhorias foram realizadas:

A alternância de propriedade/elemento típica do GML é preservada, causando estruturas profundamente aninhadas e feias. Nem todo mundo gosta de escrever um “container.xx” para atingir o valor x, com a versão 2.16.x a saída ignora um dos contêineres e expõe uma estrutura direta “container.x”
Os atributos XML agora são transformados em propriedades JSON simples e prefixados com uma “@”
Os tipos de recurso e dados não são mais perdidos nas traduções, preservados pelos atributos “@feaureType” e “@dataType”
Recursos aninhados completos são codificados como GeoJSON novamente, mantendo seus identificadores

Aqui está um exemplo do arquivo de saída no formato GeoJSON da versão 2.16.x:

{
  "type": "FeatureCollection",
  "features": [
    {
      "type": "Feature",
      "id": "0001000001",
      "geometry": {
        "type": "Point",
        "coordinates": [51.0684, 1.4298]
      },
      "properties": {
        "@featureType": "Borehole",
        "identifier": {
          "value": "BSS000AAAA",
          "@codeSpace": "http://www.ietf.org/rfc/rfc2616"
        },
        "bholeHeadworks": [
          {
            "type": "Feature",
            "geometry": {
              "type": "Point",
              "coordinates": [51.0684, 1.4298]
            },
            "properties": {
              "@featureType": "BoreCollar",
              "collarElevation": {
                "value": -32,
                "@srsName": "http://www.opengis.net/def/crs/EPSG/0/5720",
                "@srsDimension": "1",
                "@uomLabels": "m"
              }
            }
          }
        ],

Fonte: GeoServer Blog

15 September 2019
18:28
GRASS GIS: GRASS GIS 7.8.0 released
sur Planet OSGeo

We are pleased to announce the GRASS GIS 7.8.0 release
12:41
Jackie Ng: Announcing: mapguide-react-layout 0.12.1
sur Planet OSGeo

This bug fix release fixes the broken WMS layer manager that was discovered after making the 0.12 release and also refines the selection sub-highlighting capability check to exclude 4.0 preview 1 and older servers as the 4.0 preview 1 release had a broken implementation of QUERYMAPFEATURES 4.0.0.

Project Home Page
Download
mapguide-react-layout on npm
14 September 2019
18:26
Jackie Ng: Announcing: mapguide-react-layout 0.12.0
sur Planet OSGeo
As promised, here's the long overdue new release of mapguide-react-layout.

As stated in my revised plans, this release marks the point where this project will go on a short development hiatus as I give MapGuide Open Source maximum development priority for the next few months. I may put out a bugfix release or two if the need arises.

Here's what's new and notable in this release.

Support for XYZ tile sets in Flexible Layouts

Fusion in MapGuide was recently able to finally support XYZ tile sets defined in a Flexible Layout (aka. Application Definition) document. That same support has been extended to this release

XYZ tile sets can come from many different sources. It could be your own XYZ tile set definitions or a custom OSM flavor tile set, or Here Maps (as shown below)

Or many more!

Selections now live through browser refreshes

Map selection state is now stashed into browser local storage and recovered from on startup upon a browser refresh

Sub-selection highlighting now only enabled for MapGuide Open Source 4.0 (and newer) servers

Our neat little trick of sub-selecting selected features actually has a major flaw. It is built on the erroneous assumption that selection keys and selection attributes in a QUERYMAPFEATURES response are rendered in the same order (we used the current index of the selected feature's attributes to pick up the selection key at the same index to request a sub-selection for). This turned out to be sadly not the case.

Rectifying this required a new version of the QUERYMAPFEATURES API that will also render selection keys alongside attributes (to avoid the same-index selection key lookup). This has been implemented for the MGOS 4.0 preview 1 release.

But what that means is that sadly we have to disable sub-selection highlighting for older MapGuide Servers. This feature is now only enabled for MGOS 4.0 preview 1 (and newer) servers.

Share Link To View component can now copy to clipboard

This component now includes a button to copy the link to the clipboard, saving you the need to select the URL and copy yourself.

NOTE: This component will not include the map selection if another user opens the shared link on another browser/computer as that selection state lives in the user's browser local storage and is too big to reliably encode into the URL itself for sharing.

Smaller JS bundle size

The viewer JS bundle previously bundled all the necessary CSS within the JS. For this release, that CSS has been extracted out to a separate viewer.css file. This has 2 benefits.
1. The JS bundle is now smaller
2. The viewer CSS can be modified if you so please.
Compare the bundle size of the previous 0.l1.2 release

Against this 0.12 release

Other Changes
- Plug remaining i18n holes in measure and WMS layer manager components.
- Don't word wrap layer/group node labels in Legend component and provide tooltips for these labels
- Remove non-geodesic measure option as it is mostly inaccurate.
- Fix init failure if appdef has an empty widget container
- Fix line measurement total showing units in m^2
- Fix measure tool starting measuring when switching measurement type
- Fix memory leak due to dangling measure components being held on by the measure context after unmount
- Various components updated to use componentDidUpdate instead of componentWillReceiveProps
- Made redux actions more strongly-typed
- Updated Blueprint to 1.40.0
- Updated TypeScript to 3.6.3
- Updated React to 16.9.0
- Replaced query-string module with qs
- Now built with webpack 4.x
Project Home Page
Download
mapguide-react-layout on npm
13 September 2019
11:00
CARTO Blog: Risk Analysis and Optimization with Weather Data
sur Planet OSGeo

Weather is intertwined in the fabric of our lives. Much of the time, its impact is passive - we keep an umbrella in our desk, we check it to determine our outfit. Sometimes...
10:00
From GIS to Remote Sensing: SCP Tips: Notification Email of Completed Process
sur Planet OSGeo

Tips about the Semi-Automatic Classification Plugin for QGISYou can receive a notification email (through SMTP) when a long process is completed. For instance, using Gmail you can enter SMTP server: smtp.gmail.com and your account user and password (less secure app access may be required). Therefore, enter the address to send the notification email to.

For any comment or question, join the Facebook group about the Semi-Automatic Classification Plugin.
12 September 2019
18:53
gvSIG Team: gvSIG projects: REMER, coverage analysis for emergency situations
sur Planet OSGeo

In the General Directorate of Civil Protection and Emergencies (DGPCE) of Spain, gvSIG Online is used as a platform to manage geographic information, with the aim of having a single solution for all the geomatics needs at the entity. One of the projects carried out by the gvSIG Association for the General Directorate of Civil Protection and Emergencies was the development of tools to evaluate the so-called REMER.

The National Emergency Radio Network (REMER) was born with the objective of having an alternative communications system and complementary to the communication networks used by the General Directorate of Civil Protection and Emergencies. REMER is composed of amateur radio operators. The members of REMER are, therefore, permanent voluntary collaborators of the National Civil Protection System. These collaborators use their own radiocommunications means to fulfill the missions entrusted to them. There are currently more than 4,000 volunteers registered in REMER.

The project carried out with gvSIG Online allows to perform simulations, evaluate the available resources, to know the area of coverage signal in the analysis area and identify out of range areas.

For this, a gvSIG Online plugin was developed, that integrates the open source software SPLAT! Algorithm (Signal Propagation, Loss, And Terrain). SPLAT is an analysis tool for the electromagnetic spectrum between 20 MHz and 20 GHz. Among other functions, it allows to generate a coverage map based on both the location and characteristics of the terrain and the characteristics of the radio antenna. SPLAT allows analysis of loss per trajectory, power per area, received power, etc.

All the data required by SPLAT is entered from the administration part of gvSIG Online and generated results can be visualized on geoportals automatically and crossed with any other geographic information layer available in gvSIG Online.
12:30
Fernando Quadro: Banco de dados EPSG atualizado no GeoServer
sur Planet OSGeo

Graças ao patrocínio da GeoScience Australia, na versão 2.16.x do GeoServer, o banco de dados EPSG foi atualizado para a versão 9.6, incluindo aproximadamente mil códigos a mais do que a versão anterior disponível no GeoServer. A base dados também foi atualizada para garantir que os deslocamentos da grade NTv2 entre GDA94 e GDA2020 funcionem corretamente.

O conjunto de dados de parâmetros geodésicos EPSG, mantido pelo Subcomitê de Geodésia do Comitê de Geomática da IOGP, é uma coleção de definições de sistemas de referência de coordenadas e transformações de coordenadas que podem ser globais, regionais, nacionais ou locais na aplicação.

Se mesmo assim você utiliza algum sistema de coordenada que não está contido nessa lista de mais de 1000 códigos, abra uma issue para a equipe do GeoServer.

Fonte: GeoServer Blog
11 September 2019
20:57
Free and Open Source GIS Ramblings: Movement data in GIS #24: MovingPandas hands-on tutorials
sur Planet OSGeo
Last week, I had the pleasure to give a movement data analysis workshop at the OpenGeoHub summer school at the University of Münster in Germany. The workshop materials consist of three Jupyter notebooks that have been designed to also support self-study outside of a workshop setting. So you can try them out as well!

All materials are available on Github:
- Tutorial 0 provides an introduction to the MovingPandas Trajectory class.
- Tutorials 1 and 2 provide examples with real-world datasets covering one day of ship movement near Gothenburg and multiple years of gull migration, respectively.
Here’s a quick preview of the bird migration data analysis tutorial (click for full size):

Tutorial 2: Bird migration data analysis

You can run all three Jupyter notebooks online using MyBinder (no installations required).

Alternatively or if you want to dig deeper: installation instructions are available on movingpandas.org

The OpenGeoHub summer school this year had a strong focus on spatial analysis with R and GRASS (sometimes mixing those two together). It was great to meet @mdsumner (author of R trip) and @edzerpebesma (author of R trajectories) for what might have well been the ultimate movement data libraries geek fest. In the ultimate R / Python cross-over, @robinlovelace even ported tutorial 0 to Rmd, so it can be run in RStudio: 0_getting_started.Rmd

Both talks and workshops have been recorded. If everything works out, I’ll post the links here once the videos have been published.
19:09
Fernando Quadro: Live de PyQGIS – Stallone Script
sur Planet OSGeo
O canal GeoCast está com uma série de vídeos há algumas semanas sobre desenvolvimento Python com QGIS, onde os amigos Felipe Sodré Barros e Kyle Felipe, apresentam exemplos práticos que você pode utilizar no seu dia a dia.

Nesta quinta (12/09) o episódio V, tratará de como rodar a análise espacial usando ferramentas do QGIS sem ter ele aberto! É o famoso “standalone script“. Se você quer aprender a criar seu próprio script Standalone com PyQGIS, não perca esta live, que inicia as 22h!

Você perdeu os outros episódios? Não tem problema, vou deixar os links dos outros episódios logo abaixo:
Fonte: Canal GeoCast (YouTube)
12:30
Fernando Quadro: Densificação dinâmica na reprojeção
sur Planet OSGeo

O GeoServer sempre reprojetou os dados “ponto a ponto”, e isso geralmente fazia com que linhas longas representadas por apenas dois pontos se transformassem em linhas retas, em vez de curvas, como deveriam.

No GeoServer, existe uma nova opção de “Advanced projection handling” no WMS, permitindo a densificação de dados em tempo real, o mecanismo de renderização calcula a deformação da projeção aplicando na área renderizada e densificando antes da reprojeção, resultando em um agradável visual de curvas na saída. Veja uma comparação “antes e depois” aqui:

Reprojeção, ponto a ponto original versus modo densificado na versão 2.16.x

Fonte: GeoServer Blog
10 September 2019
22:58
gvSIG Team: Learn GIS with free online courses and open source
sur Planet OSGeo
Geography is increasingly being recognised as a critically important element of data. Reality is expressed on the territory. Tools that allow us to manage the territory will allow us to manage the reality.

“A geographic information system (GIS) is a system designed to capture, store, manipulate, analyze, manage, and present spatial or geographic data. GIS applications are tools that allow users to create interactive queries (user-created searches), analyze spatial information, edit data in maps, and present the results of all these operations” (Wikipedia)

Not all engineers use GIS, but it is a very useful tool for certain projects. Take free GIS courses online to build your skills and advance your career. Start learning today with gvSIG. Let’s go!
18:34
gvSIG Team: DATEG promoverá a VII Semana Acadêmica do Geoprocessamento e VIII Jornada Brasileira gvSIG
sur Planet OSGeo

Entre os dias 10 e 12 de setembro de 2019, será realizada a 7ª Semana Acadêmica da Tecnologia em Geoprocessamento e a 8ª Jornada GvSIG, no auditório do Colégio Politécnico da UFSM. Nesta edição, a organização apresenta um apanhado de experiências profissionais voltados ao gerenciamento de informações espaciais. São abordagens derivadas da aquisição de dados por ARPs, com sensores remotos embarcados, que visam soluções para agricultura de precisão e processamento de dados geográficos com ferramentas gratuitas gvSIG, RStudio, Python e QGIS. Os eventos são direcionados ao alunos do Técnico e Tecnólogo em Geoprocessamento e todos os discentes em geral que possam ter interesse nas atividades.

Programação

Inscrição VIII Jornada Brasileira de gvSIG
17:53
Fernando Quadro: Renderização de estilos complexos
sur Planet OSGeo

Se você tem estilos muito complexos, com muitas regras e condições complexas de filtragem, ficará feliz em saber que o GeoServer 2.16.x pode localizar o symbolizer certo muito mais rápido que nas versões anteriores.

Isso é útil, por exemplo, no mapa de demonstração da página inicial do GeoServer, que utliza o módulo CSS para renderizar dados do OSM usando um clone do OSM Bright.

Se você tem conhecimento de CSS, a dica é você transformar (ou criar) seus arquivos de estilos (SLD) no formato CSS, e com isso dar mais de performance ao seu mapa.

Fonte: GeoServer Blog
8:01
From GIS to Remote Sensing: Postprocessing tools for assessing land cover change
sur Planet OSGeo

This tutorial aims to analyze land cover change using the Semi-Automatic Classification Plugin (SCP) Postprocessing tools. Basically, we are going to assess land cover change from two raster classifications, and relate the changes to a land use vector file. An overview of several postprocessing tools is also provided.

Read more »
0:40
From GIS to Remote Sensing: Basic tutorial 1: Land Cover Classification of Landsat Images
sur Planet OSGeo
This is a basic tutorial about the use of the new Semi-Automatic Classification Plugin version 6 for QGIS for the classification of a multispectral image. It is recommended to read the Brief Introduction to Remote Sensing before this tutorial.The purpose of the classification is to identify the following land cover classes:
1. Water;
2. Built-up;
3. Vegetation;
4. Bare soil.
The study area of this tutorial is Greenbelt (Maryland, USA) which is the site of NASA’s Goddard Space Flight Center (the institution that will lead the development of the future Landsat 9 flight segment).

Read more »
0:39
From GIS to Remote Sensing: Cloud Masking, Image Mosaic, and Land Cover Change Location
sur Planet OSGeo

This tutorial is about the use of SCP for the assessment of land cover change. It is recommended to complete the Tutorial 2: Cloud Masking, Image Mosaic, and Land Cover Change Location before this tutorial.

The purpose of this tutorial is to locate land cover change over one year (between 2017 and 2018), using free Sentinel-2 images.

Read more »
09 September 2019
16:09
gvSIG Team: gvSIG Projects: gvSIG Suite in the Observatory of Studies on Coexistence and Citizen Security SDI
sur Planet OSGeo

SIGAPRED is the project developed for the Government of Córdoba (Argentina) by the gvSIG Association together with the UTNVM (Technological University of Villa María) to provide the police and agencies that carry out criminal analysis of a technological solution, based on the gvSIG Suite. It allows to access to georeferenced data in real time and perform all type of analysis on them. The GIS requirements for crime analysis, specified by IACA (International Association of Crime Analysts), have also been taken into account for the implementation of the project.

This project has been equipped with GIS tools that allow the police to have support for decision-making, analyzing both available information and criminal prediction.

Through a Spatial Data Infrastructure, implemented with gvSIG Online, data from entities such as the Criminal Police, the Criminal Analysis Unit, the 101 (Emergency Telephone), Drug Squad, Neighborhood Police, … are shared. To make data gathering easy an ETL plugin was developed at the platform, which converts spreadsheet data to layers recognized by gvSIG Online. On gvSIG Online there is also a complement for georeferenced surveys, with the aim of being able to be used for the victimization survey making.

Thanks to gvSIG Desktop, derived information is generated (heat maps, aggregated marker maps, geoprocessing maps, …) that allows to identify crime patterns and crime problems, to show the relationship between crime and other spatial factors, to look at the direction of movement in criminal patterns, to track crime changes, etc.

In short, this system allows the optimization of work with data related to crime management.

[Related post] Free course about crime mapping
11:50
gvSIG Team: GvSIG en las X Jornadas de Gobiernos Locales. Los SIG en la Administración Local
sur Planet OSGeo

La Asociación gvSIG participará en la mesa dedicada a los Sistemas de Información Geográfica en la Administración Local, dentro de las X Jornadas de Gobiernos Locales. La sesión dedicada a los SIG tendrá lugar el próximo viernes 20 de septiembre en Alicante.

Bajo el lema “Innovación pública y tecnología” están organizadas por la Concejalía de Nuevas Tecnologías, Innovación e Informática del Excmo. Ayuntamiento de Alicante, en colaboración con la Universidad Miguel Hernández y la Generalitat Valenciana.

Estás jornadas abordarán la situación actual de los gobiernos locales en España en el contexto actual de incertidumbre económica y de procesos de renovación institucional. Se debatirá sobre el nuevo futuro de los gobiernos locales, haciendo especial énfasis en temas de innovación pública, gobernanza electrónica, gobierno abierto, participación ciudadana y eficacia. Se reflexionará sobre las experiencias exitosas de la gestión pública en un entorno de gobiernos abiertos.

Desde la Asociación gvSIG aportaremos nuestra visión sobre la importancia de los SIG en la Administración Local, su cada vez mayor integración con otros sistemas informáticos y tecnologías, los motivos por los que todavía un gran número de ayuntamientos no utilizan SIG, las ventajas que aporta la apuesta por el software libre y hablaremos tanto de casos de éxito como de consejos para que sea exitosa la implantación de un SIG a nivel municipal.

Si queréis asistir, tenéis más información aquí.
06 September 2019
10:00
From GIS to Remote Sensing: SCP Tips: ROI Pointer
sur Planet OSGeo

Tips about the Semi-Automatic Classification Plugin for QGIS
Activating the ROI pointer you can select similar pixels (region growing) with a left click, then press CTRL to add a new polygon to the same ROI. Also, right click on any pixel to display the spectral signature thereof.

For any comment or question, join the Facebook group about the Semi-Automatic Classification Plugin.
9:29
gvSIG Team: Asistentes Inteligentes para las Infraestructuras de Datos Espaciales (IDEAIS)
sur Planet OSGeo

Junto a otras entidades de investigación, academicas e institucionales de Argentina, Brasil, Chile, Colombia, Costa Rica, Ecuador, España, Mexico, Perú, Portugal, Uruguay, la Asociación gvSIG participa en la nueva Red CYTED denominada IDEAIS, acrónimo de “Asistentes Inteligentes para las Infraestructuras de Datos Espaciales”.

El objetivo general de este Proyecto es la creación de un entorno iberoamericano de colaboración que desarrolle un sistema de asistentes inteligentes para facilitar el acceso a la Información Geográfica de las IDE.

Un proyecto con un alto contenido de I+D y que esperamos sirva para avanzar en ámbitos tan críticos como la aplicación de la geomática en la mejora de la gestión de emergencias ante desastres naturales. Aportando a estos objetivos desde el uso de tecnologías libres, accesibles para todos.

Un objetivo de interés prioritario no solo para la región iberoamericana, sino Global (GSDI), Europea (INSPIRE), Panamericana (IPGH) y Latinoamericana (GEOSUR) es que las instituciones, las organizaciones y los ciudadanos accedan fácilmente a la Información Geográfica necesaria para el buen gobierno. Sin embargo, este objetivo no ha sido alcanzado, a pesar de los costosos esfuerzos de los gobiernos para crear y poner en marcha las Infraestructuras de Datos Espaciales (IDE). Esto se debe en parte a la falta de usabilidad de los geoportales a través de los cuales se consulta y accede a la Información Geográfica. Esta Red temática propone la colaboración iberoamericana para facilitar este objetivo mediante el uso de Sistemas Inteligentes, que posibiliten el desarrollo de Asistentes Virtuales para la recuperación eficiente de la Información Geográfica. Estas tecnologías ya se utilizan en domótica, en el desarrollo de las Ciudades Inteligentes y en otros escenarios de conexión y acceso a datos como LinkedData. Los Asistentes Virtuales podrían conectarse vía voz a las IDE y buscar la Información Geográfica necesaria sin que los usuarios deban especificar en forma exhaustiva la información deseada.
04 September 2019
12:14
gvSIG Team: gvSIG projects: gvSIG Online in emergency prevention and management. Provincial Fire Consortium of Valencia
sur Planet OSGeo

In organizations such as the Provincial Fire Consortium of Valencia (CPBV) it’s essential to work with geographic information. As a result of this need, the project for the implementation of a Spatial Data Infrastructure based on gvSIG Online was launched. An important part of the success of the project is based on collaboration between entities.

Beyond the technical and organizational characteristics of the project, in this post we want to highlight different cases of use of the platform. Examples of the implementation potential of the gvSIG Suite in emergency management.

Provincial Fire Consortium of Valencia (CPBV)

General project to get information in an emergency in which all the groups of layers loaded on the server are shown.

It includes base cartography such as orthophotos, fire stations and operational areas of the Consortium, joint action area of the Consortium together with the firefighters of the Valencia City Council, Generalitat Valenciana (regional government) aerial means, firewalls and water points, roads, tracks and paths, high-rise buildings, urban and rustic constructions, sports facilities, health centers, education centers, cultural centers, farmhouses and hotels, etc.

Hydrants

Specific project in which the hydrant layer is shown and it allows to be updated in the field, with more than 7,100 hydrants identified, some of them already reviewed and other ones with pending revision.

Activities

Specific project for updating the information of the economic activities that have a self-protection plan, are pyrotechnic or have a radiological risk, are classified as risk companies according to regulations.

Fallas

Specific project for the revision of the Fallas (traditional celebration) and to determine the “Fallas” where it’s necessary to provide a prevention service.

University of Valencia

Specific project where the existing risks in the different buildings of the University of Valencia on the Burjassot campus are inventoried.

Ricardo Tormo Circuit

Specific project of the Circuit Self-Protection Plan and where emergencies that have happened can be recorded.

Metrovalencia

Specific project where the metro lines, stations, self-protection elements, emergency exits and accesses of the tunnel sections of the Metro of the province of Valencia, except Valencia capital, are inventoried.

Forest Operational Plan

Specific project to register the operation in a forest fire.

Forestry Prevention

Specific project where useful information for the operation of forestry equipment is collected, such as trails, via ferrata climbing routes, recreational areas, forest areas, observatories, vulnerability, urban/forestry interface.

Economic Activity Areas

Specific project where useful information is inventoried for emergency assistance in the economic activities of the economic activity areas.

Patricova

Specific project with information about flood risk areas, flood hazard and riverbed network.

Port Areas Activities

Specific project with information about industrial activities and study of the different scenarios that can happen in them.

Shopping Centers

Specific project with useful information for emergency assistance in economic activities that take place in a shopping center.

Dangerous Goods

Specific project with information about the intervention areas in road accidents of vehicles carrying dangerous goods.

These examples allow us to see the variety of case studies and the usefulness of having a platform such as gvSIG Online for managing geographic information.
11:00
CARTO Blog: Solving Global Litter with Machine Learning & Spatial Data
sur Planet OSGeo

Surfrider, UNEP, Oceans Conservancy, Keep America Beautiful, Keep Britain Tidy, Zero Waste Canada: many of us will be familiar with the campaigns that NGOs and our governme...
03 September 2019
18:41
GeoServer Team: GeoServer Presentations on FOSS4G 2019
sur Planet OSGeo
The GeoServer team was pleased to FOSS4G last week (26 – 30 August 2019) in Bucharest, Romania the FOSS4G 2019.

The global OSGeo conference had features a diverse range of projects, however in this post we will highlight the GeoServer presentations and workshops.

See the list of videos below:
Also from GeoServer contributors, and still pertinent to related projects or open source in general:
If you are interested in watching other videos of the event, just click here.
17:21
gvSIG Team: Asociación gvSIG en Jornada 20 Aniversario del Colegio de Geógrafos de España
sur Planet OSGeo

El día 13 de septiembre se celebrará en la ciudad de Alicante la Jornada conmemorativa: “Pasado, presente y futuro de nuestra profesión” con motivo de la celebración del 20 aniversario de la ley de creación del Colegio de Geógrafos de España. El Colegio de Geógrafos ha tenido a bien invitarnos como uno de los referentes en geomática, con lo que no podemos más que estar agradecidos y entusiasmados con nuestra participación en el evento.

La Jornada se desarrollará entre las 10:30 y las 19:00 horas y estará compuesta de tres sesiones diferentes vinculadas con las Tecnologías de la Información Geográfica, el Colegio de Geógrafos en el 20 aniversario de su ley de creación y la Geografía como profesión al servicio de las sociedades del futuro.

La Asociación gvSIG participará en la primera sesión, una mesa redonda titulada “Geografía y SIG: Enfoques y desarrollos” en las que compartiremos y contrastaremos ideas con OSGeo, Carto, QGIS y ESRI España. Un debate que seguro será enriquecedor para todos los asistentes.

La entrada será libre, pero por motivos de organización, se ruega realizar la inscripción en el correo inscripcion@geografos.org de manera previa. Además, será emitida en streaming para que pueda seguirse desde diferentes localizaciones.
12:59
Jackie Ng: MapGuide 4.0 showcase: Supercharged tile sets
sur Planet OSGeo
As promised, this is the first (of many) blog posts showcasing the new features of the just released MapGuide Open Source 4.0 Preview 1. Before we dive in, here's a little recap for some extra context.

Way back in MapGuide Open Source 3.0, we introduced the concept of a Tile Set Definition, a new resource type that allows one to define a shareable, re-usable tile set that was free of (most) server-imposed global default settings and is decoupled from any particular map or application. Before the introduction of shareable tile sets, a tile cache could only be defined within a Map Definition and was thus coupled to any application consuming this particular map. This setup also made the respective tile cache extremely prone to invalidation upon any minute changes to the Map Definition. Tile settings like size and image format were global (in serverconfig.ini) making it impossible to have tile sets of various sizes and image formats.

With the introduction of shareable tile sets, it means that tile sets no longer need to be defined on the Map Definition. Instead, it can be defined in an external Tile Set Definition resource and linked into any Map Definition (hence the shareable aspect). Being a linked resource, also means any changes to a Map Definition will not errantly flush cached tiles for the associated tile set as we have solid guarantees that editing a Map Definition that links to a tile set would not alter or compromise the layer/group structure of a tile set being linked that would normally necessitate invalidating the tile cache by deleting all previously cached tile images.

Because tile sets are now their own separate resources, it also opens up a design space that allows us to do things with these tiles that were previously not possible. Each Tile Set Definition can:
- Specify their own tile sizes
- Specify their own image formats
- Specify their own storage location (internally managed by MapGuide or an explicit directory)
- ... and much more
Tile Set Definitions also support a mini-FDO-style provider model that allows us to support different tile access semantics. This is how we're able to support XYZ tiles, while retaining the same method of accessing such tiles without any API changes.
For MapGuide 4.0, we've expanded the "...and much more" bullet point above by building on top of the shareable tile set foundation with new capabilities.
UTFGrid Tile Support
UTFGrid is a specification for rasterized interaction data. UTFGrid allows us to pre-render tooltip interaction data into tiles of textual content, which when superimposed on top of your existing map, allows us to have rich tooltips without having to send a single mapagent request for tooltip data!
If you installed 4.0 Preview 1 with samples, there is a new sample demonstrating UTFGrid tiles in action. Notice the distinct lack of mapagent requests (beyond the requests for viewer assets, tile images and UTFGrid tiles).
UTFGrid files follow the XYZ tile access scheme, and thus are supported in Tile Set Definitions using the XYZ Tile Provider with the new tile output format of UTFGRID

With the introduction of UTFGrid tiles, the 4.0 preview 1 release opens up a new viable and potent interactive web mapping combination that was previously not possible.
- Base map imagery provided by XYZ tiles (whether from an XYZ tile set served from MapGuide or from external services like OpenStreetMap)
- Overlaid with tooltip interaction data provided by UTFGrid tiles served from another MapGuide XYZ tile set.
This combination requires zero MapGuide sessions to operate. If you recall my now-somewhat-ancient thoughts on scalability in MapGuide, session repositories (and their creation/maintenance/teardown) is a main contributing factor to load in a MapGuide Server.
You can pre-cache all the required content up-front through stateless tile request APIs. You can also choose to output generated tiles to a custom directory of your choosing (by editing the TilePath setting) and front that tile cache directory as a source of static file content in a HTTP web server of your choosing for even more scalability/cacheability. If your mapping interactivity requirements are simple, this new combination of XYZ + UTFGrid tiles served from MapGuide may be a viable combination for you.

(...and it just occurred to me in the process of writing the above blocks of text that this combination opens up brand new map publishing workflows and capabilities that were previously not possible! Here's one such idea I'm brewing for a future release of MapGuide Maestro)
Beyond the provided sample, there is nothing out of the box in the Preview 1 release that currently takes advantage of UTFGrid tile support. UTFGrid support exists in OpenLayers, both in:
- The new OpenLayers (as a tile source)
- And in legacy OpenLayers 2.x that Fusion uses (as OpenLayers.Layer.UTFGrid)
So it is possible for some kind of out-of-the-box viewer support for UTFGrid tiles to appear in a future 4.0 preview release (no promises right now!)
Meta-Tiling Support
Meta-tiling is the process of rendering a bigger tile and slicing it down into sub-tiles of the original requested size. Here's a visual explanation:

By rendering bigger tiles and slicing the result down to sub-tiles for tile cache storage, we improve tile generation throughput via:
- Less queries for feature data (because we're rendering for bigger tiles)
- Requesting 1 tile and getting 2^n cached tiles for free for other requests because we cache those other sliced sub-tiles as well.
Meta-tiling was a feature that was actually implemented many years ago in a sandbox branch, but it was never merged back into trunk to be made available in a future release. With the advent of shareable tile sets introduced in MGOS 3.0, it was somewhat impractical to merge this work back into trunk as-is, so the existing meta-tiling support was refactored by yours truly to make it easy to retrofit into the new shareable tile set infrastructure.
As a result, in the 4.0 preview 1 release, meta-tiling support is available for Tile Set Definitions in both the Default and XYZ tile providers through 2 new properties:
- MetaTileFactor
- MetaTileLockMethod
The MetaTileFactor is a value > 1 that indicates how big our meta-tile to render should be. The specified value will be the multiple of the size of the tile we're requesting. For example, if we're requesting a 256x256 tile from a tile set with a MetaTileFactor of 2, MapGuide will render a 512x512 tile for division into four 256x256 tiles.

The MetaTileLockMethod is an optional setting that controls the locking behavior during this whole process.
- 1 - Uses a mutex to ensure thread-safe tile writing
- 0 or unset - Uses a file-based lock for the same effect
Generally speaking, this is a setting you don't really need to tweak and can leave as unset.

Hi-DPI (Retina) tiles
For Tile Set Definitions using the XYZ provider, a new RetinaScale property is available that allows you to generate Retina tiles. Retina tiles are (256 * n) x (256 * n) tiles where n is the specified RetinaScale value. Such tiles provide higher visual fidelity on high-resolution devices such as iPhones, iPads and high-end Android devices.

Our current out-of-the-box viewer offerings do not take advantage of Retina tiles and there is no plans to add such support. This feature is made available primarily for custom viewer offerings (like mapguide-react-layout) to take advantage of.
Other Loose Ends

The previously global TileExtentOffset property can now be configured on a per-tileset basis through a tile set property of the same name. This value is used to internally "buffer" a tile by a certain amount to be rendered to allow label placement algorithms more "breathing space" when determining optimal label placement.

We've also removed the previous restriction that you cannot create a new MgMap from a Map Definition that links to a XYZ tile set (NOTE: Maestro still enforces this restriction in the UI, but this restriction will be removed if we're connecting to a 4.0 server). To see what removing this restriction can give you, there's a new code sample that demonstrates that we can now view any conceivable Map Definition or Tile Set Definition.
12:20
Jackie Ng: Announcing: MapGuide Open Source 4.0 Preview 1.1
sur Planet OSGeo

When I announced the availability of the 1st Preview release of MapGuide Open Source 4.0, I discovered shortly afterwards, a nasty show-stopping bug in one of the new APIs that breaks interaction with the bleeding edge version of mapguide-react-layout (the sole consumer of this new API).

As this is somewhat of a blocker in terms of what I'm am currently working with, I've put out a new 1.1 Preview release that includes a fix for this bug.

Download/Release Notes

If you don't use mapguide-react-layout, this bug probably doesn't affect you and you can stick with the existing Preview 1 release, if you have already downloaded and installed that.

And since we're here, the Linux binaries will be delayed until Preview 2 as my revised packaging scheme still needs more incubation time.
12:00
CARTO Blog: Inside CARTO Engineering: Configuration Management Makeover
sur Planet OSGeo

Our primary goal at CARTO is to be the world’s leading Location Intelligence platform, empowering our clients with the best data and the best spatial analysis. We frequentl...
11:02
gvSIG Team: gvSIG Projects: Creation of a geographic database of improvised explosive devices
sur Planet OSGeo

One of the projects in which the gvSIG suite has been used in the last year is the creation of a geographic database of improvised explosive devices for MINUSMA, the United Nations Multidimensional Integrated Stabilization Mission in Mali.

The so-called IED (improvised explosive device) are explosive devices that are normally detonated by remote control and one of its main objectives is the convoy attacks. The incidents related to IED, that caused the implementation of the project, had been increased in Mali considerably in recent years.

Before carrying out of the project, despite the use of GPS tracking, troops navigation was very complicated due to the absence of cartography and the lack of updated maps of potential threats of IED. Convoys didn’t know exactly when they accessed to a vulnerable area.

To solve this circumstance, a webgis solution was launched for the creation of digital maps of threats of IED and a mobile application was developed for consulting this information in offline mode. All this based on gvSIG Online, the open source software of the gvSIG Association aimed to the Spatial Data Infrastructures and Geoportals implementation.

The workflow that was launched allows to automatically convert the database of IED made by tactical analysts into a geospatial database, also generating digital maps and their corresponding geoportals automatically with all the information about vulnerable areas. All this information is also accessible in offline mode by the troops through a mobile application.

The mobile application allows to access to the different projects, allowing to download or update all the information related to a specific operation to work offline. Once the project is downloaded offline, the troops can consult all the graphic and alphanumeric information and associated multimedia contents (such as images). It also allows to track the position of the convoy using the GPS device, locating all the relevant information around the convoy.

A good example of using gvSIG technology in critical scenarios.
02 September 2019
14:07
Fernando Quadro: Vídeos sobre GeoServer no FOSS4G 2019
sur Planet OSGeo

Na última semana aconteceu em Bucareste (Romênia) o FOSS4G 2019, o principal evento da OSGeo. Desde a primeira edição, em 2006, em Lausanne, na Suíça, é o lugar onde você vê os desenvolvimentos mais recentes, descobre as novidades ou ouve falar de um novo produto ou serviço inovador. É o lugar onde você encontra as pessoas que escreveram os livros que você lê, os blogs e as contas do Twitter que você segue.

Nesta edição, não diferente das anteriores, tiveram vários vídeos relacionados ao GeoServer, que eu deixo elencado abaixo:

– State of GeoServer 2019
– GeoServer Feature Frenzy
– SHOGun, GeoServer & QGIS Integration: Manage WebGIS Applications from your Desktop
– GeoServer WFS3: introduction to the RESTful, schemaless, JSON first download service
– Creating Stunning Maps in GeoServer, with SLD, CSS, YSLD and MBStyles
– Standing up a OSM clone with GeoServer and CSS
– Crunching Data In GeoServer : Mastering Rendering Transformations, WPS Processes And SQL

Se você tiver interesse em assistir os outros vídeos do evento, basta clicar aqui.
11:11
gvSIG Team: 15th International gvSIG Conference: New proposal deadline
sur Planet OSGeo

The deadline for submitting communication proposals for 15th International gvSIG Conference has been extended. The new deadline is September 23rd.

We encourage you to participate, not only as participant but also presenting your projects about gvSIG. You can find all the information about how to send them in the conference website.

The 15th International gvSIG Conference will take place at School of Engineering in Geodesy, Cartography and Surveying (Universitat Politècnica de València, Spain) from November 6th to 8th, and the registrations can be made from the form available at event website.

In the next weeks we will inform you about the workshops of the conference at the gvSIG Blog.

We expect your participation!
11:11
gvSIG Team: 15as Jornadas Internacionales gvSIG: Ampliación del plazo de envío de comunicaciones
sur Planet OSGeo

Se ha ampliado el plazo de envío de resúmenes para las 15as Jornadas Internacionales gvSIG, siendo la nueva fecha límite el día 23 de septiembre.

Os animamos a participar no solo como asistentes, sino como ponentes, presentando vuestros trabajos realizados sobre gvSIG. Toda la información sobre el envío de comunicaciones podéis encontrarla en la web del evento.

Las jornadas se celebrarán del 6 al 8 de noviembre en la Escuela Técnica Superior de Ingeniería Geodésica, Cartográfica y Topográfica (Universitat Politècnica de València, España), y las inscripciones continúan abiertas, pudiéndose realizar desde el formulario existente en la página web.

Durante las próximas semanas se irá publicando en el blog de gvSIG toda la información sobre los talleres que se impartirán en las jornadas.

¡Esperamos vuestra participación!
8:00
From GIS to Remote Sensing: Accuracy Assessment of a Land Cover Classification
sur Planet OSGeo

Accuracy assessment is a fundamental step after land cover classification in order to evaluate errors, globally and for each class, and finally evaluate the reliability of the map.

This post is a tutorial about accuracy assessment of a land cover classification using the Semi-Automatic Classification Plugin (SCP) for QGIS. We are going to use the function of SCP to create ROIs using stratified random points (a new function of SCP 6.4.0), which will be photo-interpreted and used as reference for the accuracy assessment. The SCP tool Accuracy will take care of the rest, providing the error matrix and the accuracy estimates.

Read more »
01 September 2019
16:30
gvSIG Team: ConvertGISEpanet y su integración con gvSIG Desktop: Herramienta para convertir un modelo de datos de una red de suministro de agua en formato Shape y EPANET
sur Planet OSGeo

En las pasadas Jornadas gvSIG de Latinoamérica y Caribe en Guanajuato, México, se presentó el software libre ConvertGISEpanet y su integración con gvSIG Desktop. Creo que es interesante que le deis un vistazo a esta nueva herramienta, por lo que os enlazamos un artículo para aquellos que queráis saber un poco más.

El resumen del mismo es:

En ciudades de tamaño medio, de países en vía de desarrollo de América Latina, Asia y África, los municipios son habitualmente los encargados de gestionar y operar los servicios del suministro de agua y saneamiento. Debido a sus limitaciones presupuestarias, generalmente, no tienen acceso a productos de software de pago que les faciliten estas tareas, siendo el simulador EPANET y los Sistemas Información Geográfica (SIG), de uso libre como gvSIG, sus únicas herramientas informáticas. La interfaz gráfica de EPANET es limitada, por lo que es preferible realizar los cambios en el modelo desde un SIG, pero ello presenta la dificultad de capturar los datos de EPANET y después retornarlos para observar cómo los cambios afectan a las variables hidráulicas y de calidad del agua. Es así como nace ConvertGISEpanet, una aplicación libre, de uso fácil e intuitivo, que permite convertir automáticamente los datos de un archivoINP a un formato manejable desde un SIG, y viceversa, permitiendo de este modo al usuario utilizar toda la amplia gama de herramientas de edición que ofrecen los SIG para editar el modelo.

El resto del artículo lo podéis leer aquí.
10:00
From GIS to Remote Sensing: SCP Tips: Report an error
sur Planet OSGeo

Tips about the Semi-Automatic Classification Plugin for QGISIn case you get an error using SCP, please report it. First activate the SCP log file, repeat the steps causing the error, then upload it to [https:]] or [https:]] providing as many details as possible about the issue.

For any comment or question, join the Facebook group about the Semi-Automatic Classification Plugin.
31 August 2019
19:11
gvSIG Team: Tutorial de análisis espacial con gvSIG Desktop: ubicación de las áreas más probables para la localización de un relleno sanitario
sur Planet OSGeo

Cada vez con más asiduidad encontramos tutoriales, manuales, trabajos universitarios, etc. que pueden ser de utilidad para el resto de la Comunidad gvSIG. Normalmente solemos difundirlos de un modo u otro por nuestras redes sociales, pero no reseñarlos en el blog. Y la idea es empezar a hacerlo a partir de ahora, ya que el blog de gvSIG se ha convertido en una de las principales herramientas de comunicación del proyecto.

Y para muestra un botón; hace unas semanas se publicó este vídeo-tutorial de análisis espacial con gvSIG Desktop en el canal de Arnaldo Daza. El objetivo del ejercicio es encontrar la ubicación de las áreas más probables para la localización de un relleno sanitario.

Aquí lo tenéis, para aquellos que os pueda ser útil:
10:00
From GIS to Remote Sensing: SCP Tips: Band Set Order
sur Planet OSGeo

Tips about the Semi-Automatic Classification Plugin for QGIS
You can reorder the band sets, for instance in chronological order, by dragging the Band set tabs.

For any comment or question, join the Facebook group about the Semi-Automatic Classification Plugin.
30 August 2019
20:00
MapProxy: New MapProxy 1.12.0 release
sur Planet OSGeo
We are pleased to announce the release of MapProxy 1.12.0. It contains a lot of major and minor improvements.

The latest release is available at: [https:]]

To upgrade within your virtualenv:
```
$ pip install --upgrade --no-deps MapProxy
```
Updated documentation is available at: [https:]]
Rescale existing tiles
MapProxy is now able to create missing tiles by rescaling tiles from zoom levels below or above.

See: [https:]]
Improved WMS TIFF output
MapProxy now georeferences all (Geo)TIFF WMS responses. TIFF images can be compressed with LZW or JPEG. jpeg_quality option is also supported for JPEG compressed TIFF files.

See: [https:]]
Other fixes and changes
There are a lot more changes and improvements, especially regarding Python 3.6 and 3.7 compatibility. Please note that Python 2.6 is no longer supported since MapProxy 1.11.0.

For a complete list of see: [github.com]
14:40
geomati.co: Herramienta de consola para la descarga desde el ATOM del Catastro
sur Planet OSGeo

En geomati.co llevamos tiempo usando los datos del Catastro para utilizarlos en visualizaciones 3D con MapboxGL. Lo que hacemos es descargarnos la información desde los servicios INSPIRE del Catastro, exactamente desde su servicios ATOM.

Para alguna demo que teníamos preparada, utilizábamos scripts que descargaban directamente los datos desde las URL. El problema es que el servicio ATOM no es precisamente un servicio fácil de usar con los nuevos navegadores.

Así que se le ocurrió a nuestro compañero Francisco Sampayo la idea de desarrollar una herramienta que facilitará esta descarga.

CatastroInspireDownloader es una herramienta desarrollada en Python que permite desde la consola, de una manera cómoda, realizar las descargas de los datos de los servicios ATOM y los empaqueta en GeoPackage.

Como la usamos.

Lo primero será instalarla en nuestro equipo:

pip install CatastroInspireDownloader

Tras la instalación tendremos acceso a la herramienta desde la consola y podremos lanzar su ejecución de la manera:

cidownloader -p 36 -m 62 --srs 25829 --filename a_illa

Esto generará un archivo a_illa.gpkg en la carpeta donde hayamos ejecutado el comando con las parcelas, edificios y direcciones descargadas del catastro.

El código de la herramienta lo tenéis en:

[https:]]

Colaboraciones y sugerencias, ¡serán bienvenidas!.

Saludos.
10:00
From GIS to Remote Sensing: SCP Tips: Speed Up Processing
sur Planet OSGeo

Tips about the Semi-Automatic Classification Plugin for QGIS
You can speed up the processing by entering a value in Available RAM settings equal to half of your system RAM.

For any comment or question, join the Facebook group about the Semi-Automatic Classification Plugin.
29 August 2019
13:16
From GIS to Remote Sensing: SCP Tips: Color Composite
sur Planet OSGeo

Tips about the Semi-Automatic Classification Plugin for QGIS
You can edit the color composite list and change the RGB composite with a simple mouse wheel scroll.

For any comment or question, join the Facebook group about the Semi-Automatic Classification Plugin.
13:09
From GIS to Remote Sensing: Semi-Automatic Classification Plugin version 6 officially released
sur Planet OSGeo

I am glad to announce that the Semi-Automatic Classification Plugin (SCP) version 6 (codename Greenbelt) has been released.
This is the result of a long work of development related to my PhD research. I am really thankful to all the supporters and users of SCP that have motivated me to do my best.

Please note that SCP 6 is compatible with QGIS 3 only; therefore you need to install the QGIS development version until QGIS 3 is officially released. Please read this previous post for a guide about how to install QGIS 3 in Windows OS.
You can install SCP from the plugin installer in QGIS.

In the next few days I'm going to publish the updated user manual and the first video tutorial.
Please consider reporting any bugs or issues that you may encounter.

Read more »
12:14
FOSS4G 2019 Bucharest: FOSS4G2019 Knowledge Partners
sur Planet OSGeo

We live in the Internet area. Have a question? Google it. Want to find a workaround to your GIS related issue, send an email to the mailing list, write on the forum. Surely, in no time an answer will pop up. Yet, we believe that no matter how many ways we have to reach that piece of information so necessary to solve our problem, the book will never lose its place among the valuable belongings to anyone, professor or entrepreneur, coder or data scientist.

Prepare your wish list to complete your GIS bookshelf as our knowledge partners, Locate Press and Manning, offer us goodies.

As many of you know, Locate Press specializes in publishing books focused on open source geospatial software and they, as knowledge partners, will offer especially for the FOSS4G 2019 participants, a 30% discount (using foss4g code) to all their books in which we all found guidance and eye candy maps.

Our knowledge partner Manning is here to test your luck! You can buy any Manning product, in any format, with 40% discount by using the code ctwfoss19. Moreover, 5 FOSS4G 2019 participants will take home one ebook of Algorithms and Data Structures in Action and 5 others will enjoy the book we all know and love, PostGIS in Action. So, we hope you brought your lucky hat, because 2 raffles will take place on Friday in our awards ceremony. Wan’ in? Go visit the OSGeo booth and write on a piece of paper one word that best describes for you the FOSS4G2019, your name and your email address.

Good luck!
11:00
CARTO Blog: Up-to-date Consumer & Demographic Data: The Backbone for Spatial Analysis
sur Planet OSGeo

Unlocking the full power of Location Intelligence can only be done using the best data sets in combination with the best spatial analysis. It is for this reason that we hav...
2:20
GeoServer Team: GeoServer 2.16-RC released
sur Planet OSGeo
We are happy to announce the release of GeoServer 2.16-RC. Downloads are available (zip and war) along with docs and extensions.

This is a GeoServer release candidate made in conjunction with GeoTools 22-RC.

We want to encourage people to test the release thoroughly and report back any issue found. With no further delay, let’s see what’s new, that is, what is there to test!
Faster map rendering of complex styles
If you have very complex styles, with lots of rules and complex filtering conditions you’ll be pleased to hear that GeoServer 2.16.x can locate the right symbolizer much quicker than previous versions. This is useful, for example, in the GeoServer home page demo map, rendered from OSM data using a OSM Bright clone built with the CSS module.
The GeoSolutions offices in Massarosa (Viareggio), Italy, in the geoserver.org demo map Dynamic densification on reprojection
GeoServer has always reprojected data “point by point”, this typically caused long lines represented by just two points to be turn into straight lines, instead of curves, as they were supposed to.

In GeoServer there is a new “advanced projection handling” option in WMS enabling on the fly densification of data, the rendering engine computes how much deformation the projection applies in the area being rendered, and densifies the long lines before reprojection, resulting in eye pleasing curves in output. See a “before and after” comparison here:
Reprojection, original point by point versus densified mode in 2.16.x EPSG database updated to v 9.6
Thanks to the sponsorship of GeoScience Australia the EPSG database has been updated to version 9.6, including roughly a thousand more codes than the previous version available in GeoServer. The code has also been updated to ensure the NTv2 grid shift files between GDA94 and GDA2020 work properly.
Complex GeoJSON output changes
GeoServer WFS can already output GeoJSON out of complex features data sources (app-schema). However, the output can be less than pleasing at times, the following improvements have been made:
- The property/element alternation typical of GML is preserved, causing deeply nested and ugly to look structures. Not everyone loves to write a “container.x.x” access to reach the x value, with 2.16.x the output skips one of the containers and exposes a direct “container.x” structure
- XML attributes are now turned into plain JSON properties, and prefixed with a “@”
- Feature and data types are not lost anymore in translations, preserved by a “@feaureType” and “@dataType” attributes
- Full nested features are encoded as GeoJSON again, keeping their identifiers
Here is an example of output from 2.16.x:
```
{
  "type": "FeatureCollection",
  "features": [
    {
      "type": "Feature",
      "id": "0001000001",
      "geometry": {
        "type": "Point",
        "coordinates": [51.0684, 1.4298]
      },
      "properties": {
        "@featureType": "Borehole",
        "identifier": {
          "value": "BSS000AAAA",
          "@codeSpace": "http://www.ietf.org/rfc/rfc2616"
        },
        "bholeHeadworks": [
          {
            "type": "Feature",
            "geometry": {
              "type": "Point",
              "coordinates": [51.0684, 1.4298]
            },
            "properties": {
              "@featureType": "BoreCollar",
              "collarElevation": {
                "value": -32,
                "@srsName": "http://www.opengis.net/def/crs/EPSG/0/5720",
                "@srsDimension": "1",
                "@uomLabels": "m"
              }
            }
          }
        ],
```
Status Monitoring module promoted to Core
The Status Monitoring module has been promoted to core, and is now included in GeoServer by default!

This module adds a new tab to the Server Status page, with system statistics so that you can monitor the system which GeoServer is running on from the Web GUI.
Authentication key module graduated to extension
The “Authkey” module has been graduated to extension, allowing security unaware applications to access GeoServer. Reminder, in order to keep the system secure the keys should be managed as temporary session tokens by an external application (e.g. MapStore can do this).
PostGIS data store improvements
The PostGIS data store sees a few improvements, including:
- TWKB encoding for geometries for all WMS/WMTS requests, reducing the amount of data travelling from the database to GeoServer
- The JDBC driver used to transfer all data as ASCII, the code was modified to allow full binary transfer when prepared statements are enabled (driver limitation, binary can only be enabled in that case)
- SSL encryption control, the driver defaults to have it on with a significant overhead, if the communication is in a trusted network the encryption can be disabled with benefit to performance
- Improved encoding of “or-ed” filters, which now use the “in” operator where possible, increasing the likeliness that an eventual index o nthat column will be used
- Native KNN nearest search when using the “nearest” filter function
OGC/GDAL stores updated to GDAL 2.x
The OGR datastore as well as the GDAL image readers have been updated and now work against GDAL 2.x official binaries, without requiring custom builds any longer.

The OGR datastore can open any vector data source and, in particular, it can use the native FileGBD library when using Windows. It’s also interesting to note that it can open Spatialite files, quite important now that the direct Spatialite store is gone.
Azure GWC blobstore
Tiles can now be stored in Azure blob containers, increasing GWC compatibility with cloud environments, after the already existing S3 support.

A warning though, Azure does not provide, unlike S3, a mass blob delete API, so on truncate GWC will have to go and remove tiles making a DELETE request for each (using parallel requests of course).
SLDService community module graduated to extension
The SLDService community module allowed to generated classified maps of vector data based on criterias such as equal interval, quantiles and unique values.

The same module has now graduated to extension, providing also data filtering based on standard deviation, equal area classification, and offering all the same services on raster data as well (with automatic sub-sampling when the source image is too large).

For example, creating a five classes quantile classification based on states persons over a custom color ramp can be achieved using the following:
```
curl -v -u admin:geoserver -XGET
  [localhost:8080] 
```
New Community Modules
- WMTS styling module, which adds the ability to get/put a style on a per layer basis using restful resources exposed as ResourceURL
- OGC API module, including implementations of the new OGC Web APIs for Features, Tiles and Styles (more to come in the upcoming months). Mind, these are cool but also prototypes based on specifications still in draft form, we have warned you, the API will likely have a few rounds of changes still before it stabilizes.
Other assorted improvements
There are many improvements to look at in the release notes, cherry picking a few here:
- Integrated GWC fails to seed layers if any data security is configured
- Default Datastore Parameters panel does not allow [https:] protocol values
- Parameter Extractor plugin cannot mangle URL correctly if Monitor plugin is installed
- Permit extensibility of Common Formats from Layer Preview page
- Update name to id in OGC API Collection
- Add support for configuring ACL in gwc-s3 community module
- Enhance mongodb schema generation
Test, test, test!
Now that you know about all the goodies, please go, download and test your favourite ones. Let us know how it went!
About GeoServer 2.16
GeoServer 2.16 is scheduled for September 2019 release.
- Release notes (2.16-RC)
2:00
SourcePole: FOSS4G 2019 Bucharest
sur Planet OSGeo

Reporting back from the annual international FOSS4G conference, which took place in Bucharest this year.
26 August 2019
12:00
CARTO Blog: Can Short-term Rental Meet Demand to Meet Aliens at Area 51?
sur Planet OSGeo

It started out as a joke-event on Facebook, but 2 million registered event attendees later, September 20th, 2019, the scheduled date of “Storm Area 51, They Can’t Stop All ...
10:31
From GIS to Remote Sensing: How to Monitor the Fires in the Amazon Rainforest on a Daily Basis
sur Planet OSGeo

The news of the fires in the Amazon rainforest is alarming.
There are several monitoring services such as FIRMS by NASA that allows for accessing the archive of global active fires (from MODIS and VIIRS) in near real-time.

This tutorial aims to describe how to easily monitor the evolution of fires in the Amazon forest, using satellite images acquired daily.
In particular, we are going to use MODIS and Sentinel-2 images to view changes and calculate the NDVI index, using the Semi-Automatic Classification Plugin (SCP).
MODIS images are acquired daily, but have 250m resolution, while Sentinel-2 images are acquired every 5 days but have 10m resolution, therefore the latter are very good for photo-interpretation and analysis of fire severity.
Of course we could also use Landsat images that have 30m spatial resolution or Sentinel-3 images.

NDVI calculated from a Sentinel-2 image (Copernicus data)

Read more »

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