Yann Chemin wrote: > I need to route VIC hydrological model, and the routing program read > AGNPS style flow direction. I tried to run r.watershed on my srtm > watershed, and after a week, I just stopped it, because I needed the > PC for other processing. (it was doing it, but slower and slower as > it passed 60% in 3 days, 65% in 4 days etc...)
FWIW, it could speed up again and also it could finish well before 100%. It is slow but it gets there. (for trial and error method to find the right threshold value, you might try at a low res first then scale?) > Now I am getting onto r.terraflow for flow direction, > but what i need is AGNPS output, what is the flow direction type > in r.terraflow format please. r.terraflow uses MDF, see the pic in the r.terraflow help page and -s flag. for MDF -> dominant SDF, see the scripts in http://trac.osgeo.org/grass/browser/grass-addons/raster/r.terraflow.tools/ if you don't use Matlab they can probably be made to work in Octave without much trouble. see d.rast.arrow's main.c for AGNPS format hints. beware that r.terraflow sink-watershed output maps are not catchments like you get from r.watershed. Hamish ____________________________________________________________________________________ Be a better friend, newshound, and know-it-all with Yahoo! Mobile. Try it now. http://mobile.yahoo.com/;_ylt=Ahu06i62sR8HDtDypao8Wcj9tAcJ _______________________________________________ grass-dev mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/grass-dev
