2009/11/19 Achim Kisseler <a...@jupiter.uni-freiburg.de>: > Thanks, Jaroslaw for response, > >> there shoud be no problem if you have oryginal DEM > I know, but I do NOT have the DEM. Thats the problem.
Ah, now I understand "is there a way in GRASS to build an accumulation map from a directions map without a dem map?" So: If you are on earth, you can get it here (mars/moon should be also available somewhere :-): http://grass.osgeo.org/wiki/Global_datasets - SRTM - ASTER GDEM especially http://grass.osgeo.org/wiki/ASTER_topography If you need to start from the accumulation map and no way to use a DEM, then I have no idea (but see the other comments) Hope this helps, Markus _______________________________________________ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user