Almost giving up on this task, and need some support. I´ve been studying GRASS GIS and training with some tutorials with The NC-dataset. What I want is doing the same task as the one called "Surface and volume calculation" from Open Source GIS - A Grass GIS Approach (3. edition).
My problem is that neither raster or vector formats can be imported. The files are there, but the "import-button" are still greyed out. I´ve got a bigger DTM-file wich i clip within QGIS, plus I need to rasterize my vectorlayer for mask when preparing for r.volume excavation.
What works is the original DTM-file. By that I mean that it can be imported (consists of an .asc and .tab for mapinfo)
What am I doing wrong?