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Category Archives: GIS software
I am looking at vegetation distribution in east Africa, using a map we have developed based on historical vegetation maps from the region, and I wanted to know the surface area per vegetation type per country. In ‘spreadsheet terms’, I … Continue reading
Geospatial analysis guide I just found, through this blog, a very nice text book on geospatial analysis; Geospatial Analysis – A comprehensive guide by M. de Smith, P. Longley and M. Goodchild. The book covers a wide range of topics … Continue reading
Importing data layers with a global coverage in GRASS GIS might in some cases result in the error message “G_set_window(): Illegal latitude for North”. For example, I got the message while trying to import the GlobCover 2009 (version 2.3).
Looks interesting, a R package that provides bindings to Spatialite functionalities. Through this bindings one can carry out the spatial functions available in Spatialite from within R using simple SQL statements.
Although I like to carry out GIS analyses using the command line interface (CLI), creating maps is something I still tend to do using the graphical interface (GUI). And most of the time that makes perfect sense to me, creating … Continue reading
One of the reasons I like GRASS GIS is that everything can be done at the command line. Of course there are other ways to do this, and one which I want to explore a bit more is the OGR … Continue reading
The GRASS GIS core development team is organizing a meeting where a group of developers and users will meet to improve the software, manuals and web site. They are seeking financial support to make this possible, see here for more … Continue reading
On the QGIS wiki there is a great section with the self-explanatory title ‘How do I do that in QGIS‘. To quote from the introduction of this section, “it is intended to show how to perform basic GIS operations in … Continue reading
For some time now it is possible to load SpatiaLite data layers in QGIS. It is read only though, any changes will need to be saved as shapefile. There is a Spatialite manager plugin, which offers an interface to the … Continue reading