Splitting vector maps in QGIS and GRASS GIS

I am currently involved in a project that is developing a vegetation map for eastern Africa. When ready we want to make the map available to the user, as GIS data layers, but also as a web-based map. I am currently trying out OpenLayers to create such a map.

One of the features I want to include is the option for the user to hide/show different vegetation types. You can see an example here (unfortunately it doesn’t work in Internet Explorer for the moment due to some bug I haven’t been able to solve yet). That means I need to create one layer per vegetation type, i.e., I need to split up the the vegetation map according to the vegetation type. Continue reading “Splitting vector maps in QGIS and GRASS GIS”

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Using DIVA-GIS to create bioclim data layers

Earlier I wrote more about how to calculate bioclim data layers in GRASS GIS. For people that do not use GRASS GIS, it is probably easier to generate these layers in DIVA GIS. You can get DIVA-GIS for free at http://www.diva-gis.org. Continue reading “Using DIVA-GIS to create bioclim data layers”