News/Articles

Trans-SEC Web GIS workshop in Morogoro, Tanzania

transsec
The Web GIS workshop was organized in a cooperation between Sokoine University of Agriculture (SUA), Tanzania and the University of Hohenheim, Germany. Last week my friend and fellow Soil Scientist Dr. Ludger Herrmann and me met at SUA in Morogoro, Tanzania to jointly lead this 3 day workshop for the Trans-SEC project working on food security in eastern Africa. Ludger had been my boss during my first job from 1998-2000 at the University of Hohenheim, Department of Soil Science and Land Evaluation, but we had not worked together professionally since then. transsec
The long name of Trans-SEC is Innovating Strategies to safeguard Food Security using Technology and Knowledge Transfer. Over the next 3 years I will work together with Ludger and our partners at SUA, a team of scientists lead by professor Siza Tumbo. My role will be to teach and support the team implementing a Web GIS platform (based on Open Source GIS software) for use in the Trans-Sec project and to publish an Atlas of Food security of Tanzania.

During this first workshop participants where introduced to MapServer, OpenLayers and PostGIS and we build some first temporary web maps together on a temporary web server. On the second last day of the workshop the server that was shipped from Hohenheim arrived in Morogoro by bus and was then installed on the last day of our stay at the computing center at SUA with help from the IT department. Ludger and I will return for two more web mapping workshops over the next two years to support the project and its mapping components.



gvSIG CE and Sextante workshop at the 2012 WAURISA Conference

Introduction to gvSIG CE and geo-processing with SEXTANTE
gvSIG CE & Sextante
Terra GIS is offering a 4 hours introductory class/hands on workshop about gvSIG CE desktop GIS and Sextante at the WAURISA Conference in Tacoma on Monday May 7th, 2012, 1pm – 5pm.
gvSIG is a powerful desktop GIS system that is known for having a user-friendly interface, being able to access the most common data formats, both vector and raster ones. It features a wide range of tools for working with geographic information (query tools, layout creation, geo-processing, networks, model builder, etc.) and provides excellent cartography and spatial analysis tools, and a wide range of spatial database connectivity. gvSIG CE is the open and international version that has many extensions such Sextante (raster and vector analysis), Raster and Remote sensing, and Network analysis natively integrated.

Preparations and downloads for workshops participants:
Prior to the workshop please download and copy to your system the gvSIG CE software and the workshop data using the links below. Note that Java is needed to run gvSIG and Sextante and is included in the gvSIG CE download for Linux and Windows, but is a separate download for some Mac operating systems .

  • gvSIG CE
  • workshop data (zipped file, unzip to your hard drive)
  • Update Monday May 7th:

  • workshop slides (PDF)
  • Picture from the workshop at WAURISA:
    WAURISA 2012 - gvSIG CE workshop picture
    More information: Please contact us via email or call 206 905 1711 if you have additional questions

    Sextante everywhere

    After the geo-processing library Sextante Sextante toolbox in QGIS was made available for gvSIG, gvSIG CE, and for ArcGIS, a plugin for QGIS was released by Victor Olaya in cooperation with the QGIS community. Now the Sextante toolbox truly has the potential to become the most comprehensive and widely used GIS geo-processing tool that runs on almost any software platform and in almost any GIS software 🙂 . Congratulations Victor and QGIS community !
    Sextante toolbox in QGIS
    For the plugin a rewrite of Sextante algorithms in python is being developed and will take some time to be completed. Currently the Sextante toolbox in QGIS provides access to Grass, Gdal, LASTtools, Sextante Modeler, OTB tools, R, SAGA, fTools and mmqgis. Lots more to come in the next months !


    SpatialKit and SEXTANTE for ArcGIS Desktop

    In today’s presentation at King County GIS Center User Group meeting (Seattle, WA, USA) I talked about two powerful free & Open source extensions for ArcGIS. Both of them were released in late 2011: SpatialKit for ArcMap and SEXTANTE for ArcGIS. These extensions offer functionality that is not available at the ArcView level to ArcGIS license owners. This talk will present the extensions and demonstrate many of their tools.
    Sextante toolbox in ArcGISSpatialKit for ArcMap enables users to use PostGIS data directly in ArcGIS. This means that ArcGIS users can employ the power of the first-class, open source spatial database PostGIS in the same way they use proprietary databases to store, edit and retrieve spatial features via ArcSDE. SpatialKit for ArcMap does not require ArcSDE, ArcInfo, the new Spatial Data Server (SDS) technology, or ArcGIS server.
    Sextante toolbox in ArcGIS
    SEXTANTE is a spatial data analysis library written in Java. The SEXTANTE for ArcGIS extension makes it possible to use SEXTANTE (and SAGA GIS) tools directly in ArcGIS, including Model Builder. Together SEXTANTE and SAGA comprise hundreds of spatial analysis functions, including many that are otherwise available in ArcGIS only through proprietary extensions that require additional licenses, such as Spatial Analyst.
    gvSIG CEgvSIG CE was presented as a powerful Desktop GIS and at the same time a great alternative to use Sextante integrated with the Grass, and Saga GIS algorithms (Grass algorithms are not available for the ArcGIS extensions at the time of writing). In the near future a version of Sextante will be released that in addition integrates the use of R (Statistical package) algorithms from within Sextante.
    downloads
    presentation slides (PDF)
    zip archive with the 2 extension software packages , documentation and all (45 MB)
    external links
    Spatial Kit for ArcMap

    SEXTANTE
    SEXTANTE for ArcGIS
    gvSIG CE


    Micuenca project workshop – San Salvador

    Terra GIS and Catholic Relief Services (CRS San Salvador office) joint forces for a three day long workshop to develop an interactive Web GIS for the GWI (Global water Initiative) Micuenca project (Integrated Watershed Management in Latin America).
    Group Picture - Micuenca Workshop San Salvador, Dec 2011
    Project Coordinator Paul Hicks (CRS) , Norma Minero (CRS) and Karsten Vennemann (Terra GIS) jointly lead a workshop with participants from each of the 4 countries in the Micuenca project: Nicaragua, El Salvador, Guatemala and Honduras. Two representatives for each of the countries attended the workshop. As a group we jointly defined and started building the functionality of the Micuenca GIS Viewer. Finally all where working in small groups to assemble and edit data for use in the Web GIS and data base.

    CSGIS and Terra GIS collaboration

    This week Ruth Schönbucher from our Partner CSGIS CSGIS(Munich / Immenstadt, Germany) joined the 3 day class Interoperable Web GIS Solutions with Free and Open Source Geospatial software as a class assistant. Dec 2011 OS Web Mapping Class picture
    The class was taught in Seattle at Office Nomads on Capitol Hill, October 3rd through October 5th, 2011. Ruth wanted to to renew her Open Source Web GIS skills (having written a MapServer book some years ago). We are sure that this will be the start for an intensive business partnership and GIS knowledge exchange between CSGIS and Terra GIS.

    Agreement of collaboration between Terra GIS Ltd. and gvSIG Association

    gvSIG Association Cooperator LogoTerra GIS and the gvSIG Association signed an agreement of collaboration. The work of the Association and its collaborators aims at promoting the use of open source geospatial solutions and is not limited to gvSIG products. Terra GIS has the immediate goal to provide enhanced recources to open source gis users such as training and support services along with easy access to documentation and tutorials. The growing list of collaborators of the gvSIG association can be found here.

    New Class – Introduction to gvSIG Open Source Desktop GIS

    gvSIG LogoTerra GIS is offering a 2 day introductory class/hands on workshop in Seattle on Tuesday November 16th and Wednesday November 17th, 2010 at the King County GIS Center’s Seattle Computer Training Facility. gvSIG is a powerful desktop GIS system that is known for having a user-friendly interface, being able to access the most common formats, both vector and raster ones. It features a wide range of tools for working with geographic information (query tools, layout creation, geoprocessing, networks, model builder, etc.) and provides excellent cartography and spatial analysis tools, and a wide range of spatial database connectivity. More…

    Open Source Spatial Database Talk – FOSS4G Barcelona

    Karsten Vennemann of TerraGIS will be presenting a 25 minute talk about Open Source Spatial Databases at FOSS4G 2010 in Barcelona (September 6th – 9th 2010). FOSS4G Barcelona 2010More than 1200 participants are expected to join this years conference. There will be more than 120 oral presentations during the conference. The abstracts have been posted online including my talk BEYOND POSTGIS – NEW DEVELOPMENTS IN OPEN SOURCE SPATIAL DATABASES. Join me and over 1000 other Open Source GIS friends in Barcelona at this exciting event!
    Download my presentation

    Open Source Desktop GIS Workshop at WAURISA 2010

    TerraGIS will be presenting a half day “pre-conference” workshop  on April 19th 2010 at the WAURISA 2010 conference. This years slogan is “rise to the challenge”. The conference is held from April 19th-21th, 2010 in the Greater Tacoma Convention & Trade Center , 1500 Broadway, Tacoma, Washington, USA.
    gvSIG start screenThis time I will be talking about “Open Source Tools for Spatial Analysis and Geoprocessing on the Desktop“. A general introduction and overview about the tools covered in this workshop will be followed by examples illustrating the use of desktop utilities based on the OGR/GDAL2 libraries, PostGIS (“the” open source spatial database) and gvSIG (a desktop GIS) for spatial analysis and geoprocessing. During the workshop participants can use a live DVD with their own laptop to go along with some of the exercises. Continue reading “Open Source Desktop GIS Workshop at WAURISA 2010”