I have two Shapefiles with Polygons ( City and Forerst)
Is there a Plugin who is able check the topology (QGIS)? Like "Knots do not overlap" or something like that? I dont want that they overlap.
Does anybody know a Plugin? Would be great!
You can use the GRASS Toolbox for that.
The new Topology Checker Plugin will be available in the next release. You can see it at work in this video: http://www.youtube.com/watch?v=huhkTZkoKC8
More info: https://github.com/qgis/Quantum-GIS/pull/356