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gvSIG Team: GIS applied to Municipality Management: Module 10 ‘How to convert cartography from CAD to GIS’

Planet OSGeo feeds - Thu, 02/08/2018 - 10:48

The video of the tenth module is now available, in which we will show how to load and manage cartography in CAD format on gvSIG.

Many municipalities have their geographic information in CAD format, and in many cases there’s an only file for the whole municipality that contains all type of information, such as power lines, parcels, drinking water system, sewage system…, each one in a different layer.

It sometimes makes it difficult to manage, even we have to divide the municipality into sheets to manage that information, where we lose information of our municipality as a group. In that case, to make queries, calculations…, we would have to open the different files.

The advantage of working with a Geographic Information System is that each type of information would be available in a different file (that would be the optimal way to work), and we would be able to overlap the different files (which would be ‘layers’ in our GIS) in the same View to be able to make analysis, consultations…

Another important advantage is that the vector layers in a GIS have an associated attribute table, and on the .SHP format, the most common in GIS, we can add all the fields that we want to that attribute table (length, area, owner, release date…). We will have a great amount of alphanumeric information of the different elements.

By having alphanumeric information it is easy, for example, to know the areas of all the parcels of our municipality at the same time, we wouldn’t have to select them individually like in a CAD. We could also make inquiries about them. For example we can make a query of parcels the area of which is larger than 1000 square meters with a simple sentence, where they would appear selected directly.

The cartography to follow this video can be downloaded from this link.

Here you have the videotutorial of this new module:

Related posts:

GIS for Thought: QGIS Multi Ring Buffer Plugin Version 1

Planet OSGeo feeds - Thu, 02/08/2018 - 00:23

After about 3 years of existing. I am releasing version 1 of the Multi Ring Buffer Plugin.

QGIS plugin repository.

With version 1 comes a few new features:

  • Ability to choose the layer to buffer after launching the plugin
  • Ability to supply buffer distances as comma separated text string
  • Ability to make non-doughnut buffers
  • Doughnut buffer:

    Non-doughnut buffer (regular):

    gvSIG Team: Adding new colour tables in gvSIG Desktop, more options to represent our data

    Planet OSGeo feeds - Wed, 02/07/2018 - 17:30

    The colour tables are used in gvSIG Desktop to represent both raster data (for example, a Digital Elevation Model) and vector data (they can be applied in legends such as unique values or heat maps). By default gvSIG Desktop has a small catalog of colour tables. But most of the users don’t know that it’s very easy to add new colour tables. Do you want to see how easy it is?

    First of all you have to know that the colour tables used by gvSIG Desktop are stored as xml files in the ‘colortable’ folder, inside the ‘gvSIG’ folder. So, if you delete some of these xml, those tables will no longer be available in gvSIG Desktop.

    Let’s see now how we can add new colour tables in gvSIG Desktop.

    To download new colour tables we will access to this website:

    http://soliton.vm.bytemark.co.uk/pub/cpt-city/

    As you will see that website contains hundreds of colour tables, many of them applicable to the world of cartography that can be downloaded in a wide variety of formats, including ‘ggr’ (GIMP gradient) format, supported by gvSIG Desktop. We will download some of the colour tables offered in that ‘ggr’ format.

    We launch the tool ‘Colour table’ in gvSIG Desktop and in the new window we press the button ‘Import library’ … .then we select the ggr files that we have downloaded and we already have them available.

    Finally, in the video we will see how they can be applied to raster and vector data once imported.

    And if you want to download ALL the colour tables in ‘ggr’ format and in a zipped file… they are available here.

    gvSIG Team: Webinar on “gvSIG Suite: open source software for geographic information management in agriculture – Technology and case studies” (February 15)

    Planet OSGeo feeds - Wed, 02/07/2018 - 13:16

    GODAN and gvSIG Association invite you to join the webinar about “gvSIG Suite: open source software for geographic information management in agriculture – Technology and case studies“, in February 15th at 2PM GMT.

    This webinar will deal with the gvSIG Suite, the whole catalog of open source software solutions offered by the gvSIG Association, and case studies about forestry and agriculture of the different products.

    With free registration, this event is appropriate for all users interested in knowing how to work with an open source Geographic Information System in agriculture and forestry sectors.

    We will speak about gvSIG Desktop, the Desktop GIS to manage geographic information and make vector and raster analysis, gvSIG Mobile, for field data gathering with mobile devices, and gvSIG Online, an integrated platform for Spatial Data Infrastructure, to create geoportals in an easy way and manage cartography between different departments in an organization.

    Attendees will be able to interact with the speakers by sending their comments and questions through chat.

    Registrations are available from: https://app.webinarjam.net/register/24718/18244a0afc

    The webinar details are:

    gvSIG Team: Añadir nuevas tablas de color a gvSIG Desktop, ampliando las opciones para representar nuestros datos

    Planet OSGeo feeds - Wed, 02/07/2018 - 12:16

    Las tablas de color se utilizan en gvSIG Desktop tanto para representar datos ráster (por ejemplo, un Modelo Digital del Terreno) como para representar datos vectoriales (se pueden aplicar en leyendas como la de valores únicos o en la de mapas de calor). Por defecto gvSIG Desktop tiene un pequeño catálogo de tablas de color. Lo que la mayor parte de usuarios no sabe es que es muy sencillo añadir tablas de color nuevas. ¿Queréis ver lo fácil que es?

    En primer lugar debéis saber que las tablas de color que usa gvSIG Desktop se almacenan como ficheros xml en la carpeta ‘colortable’, dentro de la carpeta ‘gvSIG’. Así, si por ejemplo borráis algunos de estos xml, esas tablas dejaran de estar disponibles en gvSIG Desktop.

    En el vídeo demo que acompaña a este post hemos borrado todas menos la denominada ‘Default’, que siempre debéis tener la precaución de no borrar. Como se muestra en el vídeo, al borrar los xml tan sólo nos queda una tabla de color que podamos aplicar a nuestras capas ráster y vectoriales.

    Veamos ahora la parte interesante de verdad que no es como borrar tablas de color ya existentes sino añadir otras nuevas.

    Para descargar tablas de color nuevas vamos a utilizar esta web:

    http://soliton.vm.bytemark.co.uk/pub/cpt-city/

    Como veréis contiene cientos de tablas de color, muchas de ellas aplicables al mundo de la cartografía y descargables en una amplia diversidad de formatos, incluidos algunos como el ‘ggr’ (GIMP gradient) soportados por gvSIG Desktop. De los cientos de tablas de color que ofrece la página vamos a descargar algunos de ellos en este formato ‘ggr’.

    Lanzamos la herramienta de ‘Tabla de color’ en gvSIG Desktop y en la ventana que nos aparece pulsamos el botón de ‘importar librerías’….a continuación seleccionamos los ficheros ggr que nos hemos descargada y voilà!…ya las tenemos disponibles.

    Finalmente en el vídeo demostrativo veremos como una vez importadas se pueden aplicar tanto a los datos ráster como vectoriales.

    Y si queréis descargar TODAS las tablas de calor en formato ggr y en un fichero comprimido…las tenéis disponibles aquí.

    gvSIG Team: Sentilo and gvSIG: Agreement to collaborate

    Planet OSGeo feeds - Tue, 02/06/2018 - 13:37

    We are pleased to announce that Sentilo and gvSIG communities have reached an agreement to collaborate closely in order to make it easier for users, partners and developers of both communities to deploy an integrated sensor platform and a Geographic Information System, both based on open source.

    Sentilo is an open source sensor and actuator platform designed to fit in the Smart City architecture of any city who looks for openness and easy interoperability. It is the piece of architecture that will isolate the applications that are developed to exploit the information “generated by the city” and the layer of sensors deployed across the city to collect and broadcast this information.

    It’s built, used, and supported by an active and diverse community of cities and companies that believe that using open standards and free software is the first smart decision a Smart City should take. In order to avoid vertical solutions, Sentilo is designed as a cross platform with the objective of sharing information between heterogeneous systems and to easily integrate legacy applications.

    The collaboration agreement will provide mutual priority support among and for members of the two communities who wish to integrate Sentilo and gvSIG in their projects.

    Both gvSIG and Sentilo were awarded in the Sharing & Reuse Conference 2017, organized by the European Commission, in the “Cross Border” category (gvSIG won the first prize and Sentilo won the third prize).

    gvSIG Team: Cambiando el ‘look and feel’ de gvSIG Desktop en un par de pasos

    Planet OSGeo feeds - Mon, 02/05/2018 - 20:02

    En alguna ocasión me han preguntado por cómo poder cambiar la apariencia que viene ‘de serie’ de gvSIG Desktop. La verdad es que siempre ha habido algunas opciones, aunque desconocidas para la mayoría de los usuarios. Con la versión 2.4 de gvSIG Desktop se amplían al poder crear y utilizar nuevos juegos de iconos.

    Os voy a poner un pequeño ejemplo para en un par de pasos cambiar ‘el estilo’ por defecto de gvSIG Desktop 2.4.

    En primer lugar vamos a modificar el tema de Java que usa gvSIG. Para ello vamos al botón de ‘Preferencias’, seleccionamos del árbol de opciones ‘General’ y ‘Apariencia’. A continuación seleccionamos la denominada ‘Texture’.

    Al reiniciar veremos un aspecto similar al de la imagen.

    Segundo paso, instalamos mediante el ‘Administrador de complementos’, opción ‘Instalación desde URL’, el juego de iconos denominado ‘TreCC 22×22’. Aunque nos indica que es necesario reiniciar, en este caso no lo es. Vamos de nuevo a ‘Preferencias’ y seleccionamos del árbol de opciones ‘General’ y ‘Juego de iconos’, eligiendo el que acabamos de instalar de ‘TreCC 22×22’.

    Reiniciamos gvSIG Desktop y encontraremos algo similar al siguiente vídeo:

    gvSIG Team: GIS applied to Municipality Management: Module 9 ‘Hyperlink’

    Planet OSGeo feeds - Mon, 02/05/2018 - 12:35

    The video of the ninth module is now available, in which we will show how to work with hyperlinks in gvSIG.

    This tool allows us to associate images, text files, pdf files, folders, web pages … to the geometries of our vector layer. For that we must have one or more fields in the attribute table of that shapefile in which we will have the file or folder paths or the web page URL.

    When we create the field for the paths it’s important to indicate a large size (for example 200 characters), since if we link to a very long path and the field length is smaller, that path will be cut and you will not find the linked element.

    This functionality will be very useful to show reviews, pictures, reports … of our geographical entities.

    The cartography to follow this video can be downloaded from this link.

    Here you have the videotutorial of this new module:

    Related posts:

    From GIS to Remote Sensing: Basic tutorial 1: Land Cover Classification of Landsat Images

    Planet OSGeo feeds - Mon, 02/05/2018 - 00:41
    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).


    gvSIG Team: gvSIG 2.4 RC4 ya está disponible para descargar

    Planet OSGeo feeds - Fri, 02/02/2018 - 10:23

    gvSIG 2.4 RC4, la cuarta distribución candidata a versión (Release Candidate) de gvSIG 2.4, ya está disponible para descargar desde la web de gvSIG.

    Con la publicación de este nuevo build os animamos a que lo probéis y a que nos reportéis los posibles errores y sugerencias que encontréis a través de la lista de usuarios.

    Las principales novedades de esta versión las podéis encontrar en los distintos post publicados en el blog de gvSIG, destacando, entre otras, la descarga de datos de OpenStreetMap o el acceso a las herramientas de administración de H2 desde gvSIG Desktop.

    Gracias por vuestra colaboración.

    gvSIG Team: gvSIG 2.4 RC4 is available to download now

    Planet OSGeo feeds - Fri, 02/02/2018 - 10:23

    gvSIG 2.4 RC4, the fourth gvSIG 2.4 Release Candidate is now available to download from the gvSIG website.

    With the release of this new build we encourage you to test it and send us any errors and suggestions in the users mailing list.

    The main new features of this version have been published at the gvSIG blog during the last weeks. Some of them are the possibility to download data from Open Street Map or the access to H2 from gvSIG Desktop.

    Thanks for your collaboration.

    GeoSolutions: New release of MapStore with Charts and Revised Filtering

    Planet OSGeo feeds - Thu, 02/01/2018 - 15:58

    Dear Reader,

    we are pleased to announce the release 2018.01.00 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:

    • Charts: you can now add charts to your maps for data analysis.
    • New Simplified Query Builder with Cross Layer Filtering: support for cross layer filtering from the query builder.
    • Various bug fixes and performance improvements.
    More on charts

    With this release we added an important data analysis tool that can enhance your maps with useful data. MapStore now allows to quickly generate charts (pies, lines, bars, gauges) from layer's data. Using GeoServer's powerful services, you can aggregate data and add them to the map. You can play with this map to get a feeling about this new functionalities.

    You can create a chart, and add it to the map, directly from the Table of contents, as shown below. [gallery type="slideshow" link="none" size="large" ids="3843,3842,3841,3844,3845,3854"]

    Every chart can be configured to be in sync with the map viewport, that means the data will be filtered using the current map viewport. Chart will then update everytime you pan and zoom the map to reflect the data that falls within the viewport.

    [caption id="attachment_3770" align="aligncenter" width="1024"] Chart sync with Maps[/caption] You can even provide additional filters using the query builder to refine the data that powers your charts (see below). More work is planned on the Charts functionality to provide additional chart's types and enhance the current ones. We also aim to add more elements that go beyond pure charts hence we decided to call these elements widgets, to account for future additions. Revised Query Builder and Cross Layer Filtering You will notice a new look and feel for the query builder. [caption id="attachment_3848" align="aligncenter" width="425"] New look and feel for query builder[/caption] [caption id="attachment_3849" align="alignright" width="300"] Filter all roads that intersect New York's Central Park[/caption]

    In addition, now you can filter data using the geometries from another layer of the map using the brand new "Layer Filter". Select the layer you want to use as filter and the geometric operation to match data. In addition you can add an attribute filter to the filter layer too.

    This greatly increases the analysis possibilities. You can simply find the roads that intersect New York Central Park (like below) or make more complex filters combining cross layer, spatial filter and attribute filter.

    This feature can also be used to filter the data for the charts, so you can generate charts directly from the data filtered using the cross layer.

    Advanced filtering, data aggregation and charts makes MapStore a useful tool for data analysis and visualization that goes beyond pure maps. For the future releases we plan to enhance these functionalities with new widgets and new analysis features.

    News for developers/custom projects

    The developers will notice we changed the build files and documented more the application to support the following functionalities:

    • JS/CSS versioning: now javascript and css are loaded by version, so if you're doing hard client side caching you don't need to empty the browser cache to see changes anymore. Learn how to migrate your project here.
    • Configurable and Documented I18N: now you can configure the languages you want in configuration file. Learn How

    You can also refer to the MapStore developer documentation to learn more about this feature.

    Future work

    For the next releases we plan to (in sparse order):

    • Improve existing charts and add new widgets (text, counters and statistics, dashboard...)
    • Integration with GeoNode
    • Integrated styler for GeoServer
    • Support for layers with TIME
    • Support for more general map annotations, beyond simple markers
    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 GeoServerMapstore, GeoNode and GeoNetwork through our Enterprise Support Services and GeoServer Deployment Warranty offerings, feel free to contact us!

    The GeoSolutions team,

    GRASS GIS: GRASS GIS 7.4.0 released

    Planet OSGeo feeds - Thu, 02/01/2018 - 15:55
    We are pleased to announce the GRASS GIS 7.4.0 release

    Markus Neteler: GRASS GIS 7.4.0 released

    Planet OSGeo feeds - Thu, 02/01/2018 - 15:09
    We are pleased to announce the GRASS GIS 7.4.0 release

    GRASS GIS 7.4.0: Wildfire in Australia, seen by Sentinel-2B

    What’s new in a nutshell

    After a bit more than one year of development the new update release GRASS GIS 7.4.0 is available. It provides more than 480 stability fixes and improvements compared to the previous stable version 7.2. An overview of the new features in the 7.4 release series is available at New Features in GRASS GIS 7.4.

    Efforts have concentrated on making the user experience even better, providing many small, but useful additional functionalities to modules and further improving the graphical user interface. Users can now directly download pre-packaged demo data locations in the GUI startup window. Several modules were migrated from addons to the core GRASS GIS package and the suite of tools for ortho-rectification was re-implemented in the new GRASS 7 GUI style. In order to support the treatment of massive datasets, new compression algorithms were introduced and NULL (no-data) raster files are now also compressed by default. For a detailed overview, see the list of new features. As a stable release series, 7.4.x enjoys long-term support.

    Binaries/Installer download:

    Source code download:

    More details:

    See also our detailed announcement:

    About GRASS GIS

    The Geographic Resources Analysis Support System (https://grass.osgeo.org/), commonly referred to as GRASS GIS, is an Open Source Geographic Information System providing powerful raster, vector and geospatial processing capabilities in a single integrated software suite. GRASS GIS includes tools for spatial modeling, visualization of raster and vector data, management and analysis of geospatial data, and the processing of satellite and aerial imagery. It also provides the capability to produce sophisticated presentation graphics and hardcopy maps. GRASS GIS has been translated into about twenty languages and supports a huge array of data formats. It can be used either as a stand-alone application or as backend for other software packages such as QGIS and R geostatistics. It is distributed freely under the terms of the GNU General Public License (GPL). GRASS GIS is a founding member of the Open Source Geospatial Foundation (OSGeo).

    The GRASS Development Team, Feb 2018

    The post GRASS GIS 7.4.0 released appeared first on GFOSS Blog | GRASS GIS Courses.

    gvSIG Team: Nueva jornada sobre gvSIG, en la Escuela Técnica Superior de Ingenieros Agrónomos y de Montes (ETSIAM) de la Universidad de Castilla La Mancha (Albacete)

    Planet OSGeo feeds - Thu, 02/01/2018 - 14:02

    El próximo jueves 8 de febrero se celebrará en la Escuela Técnica Superior de Ingenieros Agrónomos y de Montes (ETSIAM) de la Universidad de Castilla La Mancha, en Albacete, una jornada sobre gvSIG.

    La jornada será gratuita, con plazas limitadas, y la inscripción puede realizarse escribiendo un correo electrónico a la dirección jornadagvsigab2018@gmail.com, indicando nombre, apellidos, e-mail, organización, y a qué ponencia y/o taller/es se desea asistir. El programa de la misma es el siguiente:

    • 9:00-10:00: Ponencia “Introducción a la Suite gvSIG”
    • 10:00-11:30: Taller “Introducción a gvSIG Desktop”
    • 11:30-13:00: Taller “Introducción a scripting con gvSIG Desktop“
    • 13:00-14:30: Taller “Geoestadística con gvSIG y R“

    ¡Os esperamos!

    gvSIG Team: GIS applied to Municipality Management: Module 8.2 ‘Creation of point layers from tables (Event layers)’

    Planet OSGeo feeds - Thu, 02/01/2018 - 13:33

    The second video of the eighth module is now available, in which we continue showing how to create point layers from a table. In this case we will create an event layer, that means, a point shapefile from a table with coordinates.

    For example, the table can be composed of geographic coordinates that we could get from a topography survey with GPS.

    This functionality is another way to generate our cartography in a town hall, in this case when we only have the coordinates of the points.

    The cartography to follow this video can be downloaded from this link.

    Here you have the second videotutorial of this eighth module:

    Related posts:

    Fernando Quadro: GeoUsage – Análise de serviços OGC

    Planet OSGeo feeds - Wed, 01/31/2018 - 11:30

    O GeoUsage é uma ferramenta gratuita e de código aberto desenvolvida por Tom Kralidis para dar suporte a caso de uso de métricas e análise do uso dos serviços OWS (OGC Web Services).

    Você gostaria de saber quantos usuários estão acessando seus serviços? Quais as camadas e projeções são as mais populares? Qual largura de banda utilizada? Quantos o volume de downloads de dados?

    Desenvolvido em Python, a GeoUsage não possui opiniões fortes além das análises específicas dos logs do servidor web onde se encontram os serviços OWS. O GeoUsage é “composable“, ou seja, a freqüência, o gerenciamento de logs e o armazenamento de resultados é totalmente voltado ao usuário. Dito isto, uma interface de linha de comando simples e bonita está disponível para visualizar os resultados.

    Fonte: Tommy’s Scratchpad

    OTB Team: Orfeo ToolBox 6.4 is out!

    Planet OSGeo feeds - Wed, 01/31/2018 - 10:46
    We are happy to announce that Orfeo ToolBox 6.4 is out! As usual, ready-to-use binary packages are available for Windows, Linux and Mac OS X: OTB 6.4 You can also checkout the source directly with git: git clone https://git@git.orfeo-toolbox.org/git/otb.git OTB -b release-6.4 We welcome your feedback and requests, and encourage you to join the OTB […]

    Tom Kralidis: GeoUsage: Log Analyzer for OGC Web Services

    Planet OSGeo feeds - Tue, 01/30/2018 - 15:17
    Continuing on the UNIX philosophy, another little tool to help with your OWS workflows. GeoUsage attempts to support the use case of metrics and analysis of OWS service usage.  How many users are hitting your OWS?  Which layers/projections are the most popular?  How much bandwidth?  How many maps vs. data downloads? A pure Python package, […]

    gvSIG Team: GIS applied to Municipality Management: Module 8.1 ‘Creation of point layers from tables (Geocoding: Points from a table with addresses)’

    Planet OSGeo feeds - Mon, 01/29/2018 - 17:06

    The first video of the eighth module is now available, in which we will show how to create point layers from a table. In this first case we will speak about geocoding, creating a point shapefile from a table with addresses.

    Apart from addresses, that table could also contain characteristic elements such as museums, monuments, sports facilities…, that is, any place that we could find in search engines such as Google Maps, OpenStreetMap…, since it uses these search engines to create that layer.

    This functionality is very useful in a municipality because if we have for example several tables with these type of elements or their addresses, we wouldn’t have to digitalize one by one. Thanks to this geoprocess we can do it automatically, and we would only have to tackle a quality control phase at the end to check that the results are correct (since as we know, these search engines also have certain errors). Besides, we can indicate that the geoprocess shows us which elements or addresses haven’t been found, in order to digitalize them in another way.

    We will also show how to access to Google Street View from gvSIG, very interesting for office work, for certain queries that would avoid us to have to go to that place in person.

    The cartography to follow this video can be downloaded from this link.

    Here you have the first videotutorial of this eighth module:

    Related posts:

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