OSGeo Planet

gvSIG Team: Video about The Horton Machine plugin available: new geoprocesses for gvSIG

OSGeo Planet - Tue, 2018-03-27 08:30

The recording of the video about The Horton Machine plugin is now available. This plugin adds hundreds of new geoprocesses to gvSIG.

This presentation was given during the 3rd gvSIG Festival, and it shows how to work with this new extension, that includes a lot of interesting tools: geomorphology analysis (drainage direction, network and watershed extraction, rescaled distances and hydrologic attributes, slope, curvatures, hydrologic indexes, geomorphologic attributes, statistics, peakflow, Saint Venant, tools to prepare data for HECRAS, Shalstab, debrisflow…), LESTO (LiDAR Empowered Sciences Toolbox Opensource), raster map calculator, mobile tools…

At this post you can find more information about how to install it.

And here you have the video about the presentation:

Categories: OSGeo Planet

gvSIG Team: ‘Just Side’, herramienta para identificar injusticias sociales y ambientales en Iberoamérica

OSGeo Planet - Mon, 2018-03-26 19:31

Una red de universidades y empresas iberoamericanas liderada por la Universidad portuguesa de Coimbra y en la que participa la Asociación gvSIG desarrollará durante los próximos años la herramienta ‘Just Side’, un programa basado en el ‘geoderecho’ que identificará las injusticias sociales y ambientales para su posible prevención. Esta herramienta a desarrollar se pondrá a disposición de los gobiernos de los países iberoamericanos.

El proyecto, que acaba de arrancar, estudiará 16 casos concretos en territorios donde se hayan desarrollado políticas cuyo resultado haya sido nocivo desde el punto de vista económico o ambiental para la población.

Para desarrollar ‘Just Side’, se estudiarán principalmente territorios con dificultad de acceso a los servicios públicos esenciales, lugares donde se suelen construir infraestructuras con impactos negativos, tales como vertederos de residuos o incineradoras.

El programa dispondrá de una solución con base cartográfica sobre la que ser irán superponiendo variables, tales como la renta per cápita, el tipo de vivienda, distancias a servicios públicos o acceso a vías de comunicación. Toda la información, territorial y social, será analizada mediante procesos geoespaciales que ayuden en la visualización y detección de problemas y patrones. Precisamente la Asociación gvSIG forma parte de esta red como experto en el desarrollo de Sistemas de Información Geográfica con software libre.

La futura herramienta tendrá un doble objetivo: identificación de los problemas relacionados con injusticias territoriales y  la puesta a disposición de los gobiernos de una solución en software libre, facilitando el que puedan corregir dichos desequilibrios mediante políticas adecuadas.

En la creación de la herramienta la Asociación gvSIG trabajará con 40 investigadores de las universidades de Buenos Aires, Santa Catarina (Brasil), Costa Rica, Santiago de Chile, la Autónoma de México, Uruguay, y la española de La Rioja, además de con la empresa brasileña Geodereito. Para el desarrollo de la solución la Asociación gvSIG pondrá a disposición la Suite gvSIG, su catálogo de soluciones en software libre para gestión de información territorial.

Como ejemplo, en el caso de Chile, la red de investigadores evaluará la iniciativa que pondrá en marcha el Gobierno en la Isla de Pascua, con la que pretende restituir a la población indígena de esta zona, los míticos Rapa Nui, los terrenos que les fueron arrebatados el siglo pasado.

De esta manera, mediante la nueva herramienta también se podrán analizar la formas de compensar injusticias históricas.

En el caso de Portugal, los estudios se centrarán en los embalses de la cuenca alta del río Duero, tanto los que están en activo como los que se pretenden construir, con el fin de analizar los niveles de desempleo o los impactos ambientales.

Esta red iberoamericana, financiada por CYTED, y cuyos trabajos se extenderán hasta 2021, se presentará el próximo 20 de abril en la Universidad de Coimbra, formando parte de una conferencia que contará con expertos sobre geoderecho y geomática de Portugal, España y Noruega, especializados en la vulnerabilidad social a partir del territorio.

Categories: OSGeo Planet

gvSIG Team: Video of the presentation about ‘Emergency management and prevention with gvSIG Online’ available

OSGeo Planet - Mon, 2018-03-26 16:32

During the 3rd gvSIG Festival there was a presentation about “Emergency management and prevention with gvSIG Online“, a different application of the platform for Spatial Data Infrastructures implementation based on open source software, carried out by the gvSIG Association.

At this presentation we show how gvSIG Online has improved the ability to act in case of an emergency, facilitating the work and allowing to manage geographic information in an easy way. This platform has been implemented in the fire brigade department in Valencia (Spain), and it would be able to be applied in any country for prevention and emergencies. Here you can watch the video with the presentation:

Categories: OSGeo Planet

gvSIG Team: Recording of “gvSIG applied to geology and mining” presentation available

OSGeo Planet - Mon, 2018-03-26 14:13

During the 3rd gvSIG Festival there has been a presentation about gvSIG applied to geology and mining. Exploration, investigation, exploitation…each one of these steps include different tasks that can be benefited by their inclusion in a gvSIG analysis. Find out more about open source GIS applied to geology and mining…

The video of this presentation is available here:

Categories: OSGeo Planet

Jackie Ng: Announcing: MapGuide Open Source 3.1.1 Release Candidate

OSGeo Planet - Mon, 2018-03-26 13:09
I am pleased to announce the release candidate of MapGuide Open Source 3.1.1 is now available.

Of the ton of bug fixes and minor enhancements since the 3.1 release, the key changes of note in 3.1.1 are:

Have a gander at the full list of changes for more information.
This is a release candidate, and not the final release as it's been so long since the 3.1 release that I want to make sure our release process is still sound after such a long break between releases. Barring anything of a show-stopping nature, the final release of 3.1.1 will drop one week from now.
Download/Release Notes
Categories: OSGeo Planet

Fernando Quadro: Novos módulos no GeoServer 2.13

OSGeo Planet - Mon, 2018-03-26 10:30

A versão 2.13 vem com alguns novos módulos, em particular:

– Você deseja gerar saídas compatíveis com GHRSST a partir de entradas do GHRSST? Experimente o novo módulo de saída do GHRSST NetCDF.
– O módulo MongoDB fornece um wrapper fácil de usar no armazenamento de dados mongodb do GeoTools, permitindo que você publique dados geoespaciais armazenados no seu mongodb.
– Há também um novo módulo que introduz perfis NSG para os serviços WFS e WMTS.

Os módulos existentes também receberam algum “carinho”, em particular:

– O módulo de download WPS agora permite baixar mapas grandes e também criar animações, gerando MP4 cortesia da biblioteca jcodec. Ambos os processos podem (e devem!) ser invocados de forma assíncrona para lidar melhor com longos tempos de geração. Aqui está um exemplo de saída de animação:

http://www.fernandoquadro.com.br/html/wp-content/uploads/2018/03/response.mp4

– O processo de download do WPS agora também permite o controle da estrutura de saída do GeoTiff (tiling, compression) em downloads rasterizados, bem como o download de parte de grânulos de um mosaico heterogêneo em seu CRS nativo e resolução nativa.

– Várias melhorias de desempenho JDBCConfig e JDBCStore, reduzindo o número de consultas de configuração de banco de dados realizadas para cada solicitação OGC. As consultas de configuração também são registradas de maneira consistente para análise posterior.

Note que os módulos não fazem parte do lançamento; em vez disso, você pode encontrá-los nas nightly builds.

Fonte: GeoServer Blog

Categories: OSGeo Planet

Free and Open Source GIS Ramblings: Processing script template for QGIS3

OSGeo Planet - Sun, 2018-03-25 09:08

Processing has been overhauled significantly for QGIS 3.0. Besides speed-ups, one of the most obvious changes is the way to write Processing scripts. Instead of the old Processing-specific syntax, Processing scripts for QGIS3 are purely pythonic implementations of QgsProcessingAlgorithm.

Here’s a template that you can use to develop your own algorithms:

from qgis.PyQt.QtCore import QCoreApplication, QVariant from qgis.core import (QgsField, QgsFeature, QgsFeatureSink, QgsFeatureRequest, QgsProcessing, QgsProcessingAlgorithm, QgsProcessingParameterFeatureSource, QgsProcessingParameterFeatureSink) class ExAlgo(QgsProcessingAlgorithm): INPUT = 'INPUT' OUTPUT = 'OUTPUT' def __init__(self): super().__init__() def name(self): return "exalgo" def tr(self, text): return QCoreApplication.translate("exalgo", text) def displayName(self): return self.tr("Example script") def group(self): return self.tr("Examples") def groupId(self): return "examples" def shortHelpString(self): return self.tr("Example script without logic") def helpUrl(self): return "https://qgis.org" def createInstance(self): return type(self)() def initAlgorithm(self, config=None): self.addParameter(QgsProcessingParameterFeatureSource( self.INPUT, self.tr("Input layer"), [QgsProcessing.TypeVectorAnyGeometry])) self.addParameter(QgsProcessingParameterFeatureSink( self.OUTPUT, self.tr("Output layer"), QgsProcessing.TypeVectorAnyGeometry)) def processAlgorithm(self, parameters, context, feedback): source = self.parameterAsSource(parameters, self.INPUT, context) (sink, dest_id) = self.parameterAsSink(parameters, self.OUTPUT, context, source.fields(), source.wkbType(), source.sourceCrs()) features = source.getFeatures(QgsFeatureRequest()) for feat in features: out_feat = QgsFeature() out_feat.setGeometry(feat.geometry()) out_feat.setAttributes(feat.attributes()) sink.addFeature(out_feat, QgsFeatureSink.FastInsert) return {self.OUTPUT: dest_id}

This script just copies the features of the input layer to the output layer without any modifications. Add your logic to the processAlgorithm() function to get started.

Use Create New Script from the Toolbox toolbar:

Paste the example script:

Once saved, the script will show up in the Processing toolbox:

Categories: OSGeo Planet

Free and Open Source GIS Ramblings: Revisiting point & polygon joins

OSGeo Planet - Sat, 2018-03-24 11:25

Joining polygon attributes to points based on their location is a very common GIS task. In QGIS 2, QGIS’ own implementation of “Join attributes by location” was much slower than SAGA’s “Add polygon attributes to points”. Thus, installations without SAGA were out of good options.

Luckily this issue (and many more) has been fixed by the rewrite of many geoprocessing algorithms for QGIS 3! Let’s revisit the comparison:

I’m using publicly available datasets from Naturalearth: The small scale populated places (243 points) and the large scale countries (255 polygons with many nodes). Turns out that QGIS 3’s built-in tool takes a little less than two seconds while the SAGA Processing tool requires a litte less than six seconds:

Like in the previous comparison, times were measured using the Python Console:

In both tools, only the countries’ SOVEREIGNT attribute is joined to the point attribute table:

import processing t0 = datetime.datetime.now() print("QGIS Join attributes by location ...") processing.runAndLoadResults( "qgis:joinattributesbylocation", {'INPUT':'E:/Geodata/NaturalEarth/vector_v4/natural_earth_vector/110m_cultural/ne_110m_populated_places.shp', 'JOIN':'E:/Geodata/NaturalEarth/vector_v4/natural_earth_vector/10m_cultural/ne_10m_admin_0_countries.shp', 'PREDICATE':[5],'JOIN_FIELDS':['SOVEREIGNT'], 'METHOD':0,'DISCARD_NONMATCHING':False,'OUTPUT':'memory:'}) t1 = datetime.datetime.now() print("Runtime: "+str(t1-t0)) print("SAGA Add polygon attributers to points ...") processing.runAndLoadResults("saga:addpolygonattributestopoints", {'INPUT':'E:/Geodata/NaturalEarth/vector_v4/natural_earth_vector/110m_cultural/ne_110m_populated_places.shp', 'POLYGONS':'E:/Geodata/NaturalEarth/vector_v4/natural_earth_vector/10m_cultural/ne_10m_admin_0_countries.shp', 'FIELDS':'SOVEREIGNT','OUTPUT':'C:/Users/anita/AppData/Local/Temp/processing_8b1bbde78de5490285dd530e115cca52/099660d88bf14c54a853cc230e388e55/OUTPUT.shp'}) t2 = datetime.datetime.now() print("Runtime: "+str(t2-t1))

It is worth noting that it takes longer if more attributes are to be joined to the point layer attribute table. For example, if the JOIN_FIELDS parameter is empty:

'JOIN_FIELDS':[]

instead of

'JOIN_FIELDS':['SOVEREIGNT']

then the the Join attributes by location takes almost 16 seconds. (The country layer contains 71 attributes after all.)

(The SAGA tool currently allows only joining one attribute at a time.)

Categories: OSGeo Planet

Fernando Quadro: Melhorias na interface gráfica do GeoServer

OSGeo Planet - Fri, 2018-03-23 10:30

Ainda como parte das melhorias realizadas na versão 2.13 do GeoServer, a interface para digitar URLs para arquivos de dados foi melhorada com a funcionalidade de autocomplete – agora o GeoServer irá verificar o caminho que já foi digitado e sugerir arquivos existentes dentro desse caminho.

Além disso, o suporte ao preenchimento automático foi adicionado a vários menus suspensos que contêm uma longa lista de valores, como stores e layers. Agora você pode começar a digitar o nome de uma opção e as opções visíveis serão filtradas de acordo com o que você digitou.

A edição dos parâmetros da camada raster tornou mais fácil, pois ao invés de apenas campos texto de entrada, alguns campos foram substituídos por campos com controles apropriados, dependendo do tipo de parâmetro. Aqui está uma comparação do “antes e depois”:

Finalmente, as mensagens de erro agora são exibidas na parte superior (como de costume) e na parte inferior (nova!) em todas as páginas de configuração. Isso deve facilitar a localização de mensagens de erro, especialmente durante a edição de estilos:

Fonte: GeoServer Blog

Categories: OSGeo Planet

GRASS GIS: GRASS GIS 7.2.3 LTS released

OSGeo Planet - Thu, 2018-03-22 21:44
We are pleased to announce the GRASS GIS 7.2.3 LTS release
Categories: OSGeo Planet

gvSIG Team: Cómo utilizar gvSIG Mobile, el SIG en software libre para toma de datos en campo

OSGeo Planet - Thu, 2018-03-22 18:11

Durante el 3er Festival gvSIG se ha realizado una presentación práctica sobre cómo trabajar con gvSIG Mobile, el SIG en software libre para toma de datos en campo, y su integración con gvSIG Desktop, el SIG en software libre que permite una edición y análisis avanzados, geoprocesamiento…

La aplicación gvSIG Mobile se puede instalar desde Google Play Store.

Durante la presentación se han mostrado las diferentes herramientas disponibles en esta interesante aplicación, y cómo importar/exportar datos desde/a gvSIG Desktop. También se ha explicado cómo instalar el complemento disponible para gvSIG Desktop que permite gestionar la cartografía de gvSIG Mobile.Los enlaces directos a las diferentes herramientas que se han mostrado durante el video son los siguientes:

El vídeo completo de la presentación es el siguiente:

Categories: OSGeo Planet

gvSIG Team: How to use gvSIG Mobile, open source GIS for field data gathering

OSGeo Planet - Thu, 2018-03-22 16:23

During the 3rd gvSIG Festival there has been a practical presentation about how to work with gvSIG Mobile, the open source GIS for field data gathering, and its integration with gvSIG Desktop, the open source GIS that allows an advance editing, analysis, geoprocessing…

gvSIG Mobile can be installed from Google Play Store.

During the presentation we have shown the different tools that are available in this interesting application, and how to import/export data from/to gvSIG Desktop. We also explained how to install the plugin available for gvSIG Desktop to manage gvSIG Mobile cartography.

Here you have a direct link to the different tools that have been shown during the video:

And here you have the complete video:

If you have any doubt or problem with the applications you can use the mailing lists.

Categories: OSGeo Planet

gisky: Easily testing the latest version of GDAL

OSGeo Planet - Thu, 2018-03-22 16:17
GDAL is one of the cornerstones of the open source geospatial stack (and actually of many of the proprietary systems as well).
If you want to use or test the latest features this can be done quite easily by setting a few environment variables:

I save this commands in a file new_gdal.sh. After running

source new_gdal.shYou will be able to use all the latest gdal tools.

johan@x1:~$ source ~/latest_gdal.sh
johan@x1:~$ gdalinfo --version
GDAL 2.3.0dev, released 2017/99/99


Actually if you use this command, also tools dynamically linked to gdal will be using this latest version.

johan@x1:~$ saga_cmd io_gdal
____________________________

##### ## ##### ##
### ### ## ###
### # ## ## #### # ##
### ##### ## # #####
##### # ## ##### # ##
____________________________

SAGA Version: 6.4.0


Library: GDAL/OGR
Category: Import/Export
File: /usr/local/lib/saga/libio_gdal.so
Description:
Interface to Frank Warmerdam's Geospatial Data Abstraction Library (GDAL).
Version 2.3.0dev

Note that this will work well for packages dynamically linked to the C api. If packages are linked to the C++ api, they may need recompilation.

If you are on windows, you could have a look at SDKShell.bat (part of the builds from Tamas Szekeres).

Note: I actually wrote this blogpost because in his presentation on FOSDEM Jeremy Mayeres recommended using Docker for using the latest version of GDAL. I think that solution is overkill for desktop usage, and using environment variables is easier.
Categories: OSGeo Planet

gvSIG Team: Vídeo de presentación de las novedades de gvSIG Desktop 2.4

OSGeo Planet - Thu, 2018-03-22 15:35

Como parte del 3er gvSIG Festival se ha realizado un webinar de presentación de las principales novedades de la última versión de gvSIG Desktop.

Si eres usuario de gvSIG Desktop no te pierdas este vídeo para descubrir todas las mejoras de la versión 2.4:

Puedes descargar gvSIG Desktop, tanto en su versión instalable como portable, desde aquí:

http://www.gvsig.com/es/productos/gvsig-desktop/descargas

Categories: OSGeo Planet

gvSIG Team: gvSIG aplicado a Medio Ambiente. Grabación del webinar disponible.

OSGeo Planet - Thu, 2018-03-22 13:48

La necesidad de medir, gestionar y analizar la información de los estudios ambientales ha hecho de los Sistemas de Información Geográfica una herramienta fundamental. Lo demuestra su aplicación en campos como el ámbito forestal (áreas de aprovechamiento forestal, valoración de zonas afectadas por incendios, control de plagas…), conservacionista (monitoreo de especies protegidas, gestión de humedales,…), agrícola (establecimiento de zonas óptimas de cultivo, gestión de recursos hídricos,…), etc.

Os traemos la grabación del webinar ‘gvSIG aplicado a Medio Ambiente’ realizado durante el 3er gvSIG Festival. Durante el mismo se introducirá en el uso de gvSIG al trabajo medioambiental.

Y si os interesa el tema, y queréis formaros en el uso de estas tecnologías para Medio Ambiente, no os perdáis este curso gratuito.

Categories: OSGeo Planet

gvSIG Team: Video about the gvSIG Desktop 2.4 new features is now available

OSGeo Planet - Thu, 2018-03-22 13:45

The new features of the last gvSIG version (gvSIG 2.4) have been presented during the 3rd gvSIG Festival.

At this presentation we have shown the different plugins that have been included in this powerful version, and all the improvements, both in the existing functionalities and on the application behaviour.

If you have any doubt about this last version you can use the gvSIG mailing lists.

The video of this presentation is available here:

Categories: OSGeo Planet

gvSIG Team: Recording of “gvSIG applied to archaeology” presentation available

OSGeo Planet - Thu, 2018-03-22 11:49

During the 3rd gvSIG Festival there has been a presentation about gvSIG applied to archaeology.

At this video the speaker showed several successful cases studies in this sector, carried out by several users in the last years with gvSIG.

At the end of the video, gvSIG Online was shown too, with data related to archaeology loaded on a geoportal.

The video of this presentation is available here:

Categories: OSGeo Planet

Fernando Quadro: Workspaces isolados no GeoServer

OSGeo Planet - Thu, 2018-03-22 10:30

O conceito de “Espaços de Trabalho Isolados (Isolated Workspaces)” foi adicionado ao GeoServer na versão 2.13.0, para permitir a reutilização de um namespace entre vários espaços de trabalho (workspace).

Em particular, um espaço de trabalho isolado permite a reutilização de um namespace já utilizado por outro espaço de trabalho, mas os seus recursos (camadas, estilos, etc.) só podem ser recuperados ao utilizar os serviços virtuais desse espaço de trabalho que só serão exibidos nesses documentos.

Ao reutilizar um namespace entre espaços de trabalho, exatamente um deles deve ser não-isolado, e o restante deve ser isolado; Por exemplo, espaços de trabalho isolados não têm restrições no uso de um namespaces, mas as restrições existentes ainda se aplicam a espaços de trabalho não isolados.

Isso é particularmente útil para quem publica esquemas complexos para conformidade com o INSPIRE (Europa). Para mais detalhes, consulte a proposta original desta funcionalidade.

Fonte: GeoServer Blog

Categories: OSGeo Planet

gvSIG Team: “Learning scripting on gvSIG in half an hour” videotutorial available

OSGeo Planet - Wed, 2018-03-21 14:50

During the 3rd gvSIG Festival there has been a presentation about learning scripting on gvSIG in a few minutes.

With this video, any user without a developer profile can learn to create their own scripts in gvSIG, where a lot of customized tools can be added to the application.

If you develop any script and you want to share it with the community, or if you have any doubt when you create your scripts, you can send the question to the mailing list.

The video of this presentation is available here:

Categories: OSGeo Planet

gvSIG Team: Recording of ‘gvSIG Crime: Open source GIS for criminology’ presentation at the 3rd gvSIG Festival available

OSGeo Planet - Wed, 2018-03-21 12:41

The recording of the video of the ‘gvSIG Crime: Open source GIS for criminology‘ presentation, given at the 3rd gvSIG Festival, is now available.

At this video we show what this new product of the gvSIG Association is, where we explain its components:

  • gvSIG Desktop: Geographic Information System for editing, 3D analysis, geoprocessing, maps, etc
  • gvSIG Online: Integral platform for Spatial Data Infrastructure (SDI) implementation.
  • Lime Survey: application to make surveys.
  • gvSIG Mobile: Mobile application for Android to gather field data

If you have any question about the presentation you can use the gvSIG mailing lists, and if you are interested in implementing gvSIG Crime in your organization you can contact info@gvsig.com

The video is available here:

Categories: OSGeo Planet
Syndicate content