Hi,
I know it is pretty standard to subtract to maps from each other and I do have
the command for r.mapcalc, but it is not doing what I expect.
I have a landcover map and a map wit buildings. Both are raster maps. Now I
want to get rid of the areas in the landcover map that are covered by
buildings. To get this done I wrote:
r.mapcalc "newmap = landcover - buildings"
The outcome is a map showing only the buildings and no landcover. It also
doesn't matter if I change the order in the equation, the result is the same:
Only buildings are delivered.
Can you help me out with this?
Thanks,
Thomas
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