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”