I am trying to use GRASS GIS for the first time. After quite a lot of trouble I managed to create a location and a new mapset, and my shapefile is now displayed in the window "GRASS GIS Map Display" (for some reason only in 3d view).
My next step would be to use the v.to.3d module to add a value to the z-coordinate. I don't seem to get it right, first I tried to use "Search module", and when I found v.to.3d I doubleclicked and filled out the appearing form. That didn't work... Then I tried writing it manually in the "Command console", but being a total GRASS GIS-beginner I'm not sure how to write? I get, or I think I get, that I need the command 'v.to.3d', an input, output and in some way add a height value.
Can someone please give me a hand? Exactly how can I do this?