On Thu, Sep 1, 2011 at 4:07 PM, Arno Gerretsen <[email protected]> wrote: ... > I did another attempt to use r.watershed on my big file. This time I > compiled GRASS 6.4.1 from source code and made sure it was configured for > largefiles (--enable-largefile).
I tried myself with GRASS 6.4.2.svn (note that you have 6.4.1). That may make the difference. > However I still get errors from r.watershed > and it seems related to the segment file: > > GRASS 6.4.1 (ML):~/grass/bin > r.watershed elevation=ML_elev > stream=stream_total accumulation=accumulation_total threshold=10000 --o -m > memory=2000 > SECTION 1 beginning: Initiating Variables. 5 sections total. > WARNING: No such file or directory > WARNING: dseg_open(): could not write segment file > WARNING: Subprocess failed with exit code 136 > > Can anybody tell me what is causing this (and how I could solve it)? In this > case I was using a region of 19800x16200 pixels. GRASS 6.4.2svn (patUTM32):~ > g.region rast=italy_dem20_final res=60 -p projection: 1 (UTM) zone: 32 datum: wgs84 ellipsoid: wgs84 north: 5220298.87460934 south: 3930058.87460934 west: 313280.88065731 east: 1328680.88065731 nsres: 60 ewres: 60.00118182 rows: 21504 cols: 16923 cells: 363912192 GRASS 6.4.2svn (patUTM32):~ > r.watershed italy_dem20_final stream=stream_total accumulation=accumulation_total threshold=10000 -m memory=2000 SECTION 1 beginning: Initiating Variables. 5 sections total. SECTION 1b (of 5): Determining Offmap Flow. 100% SECTION 2: A * Search. 46% ... Looks fine! Markus _______________________________________________ grass-user mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/grass-user
