simogeo wrote: > I'm using r.sun for calculatin shadow and getting solar > irradiance. > > I've tried to run both command on my raster : > > /r.sun -s elevin=calcul_rast incidout=shadow day=80 > time=17/ > > / r.sun -s elevin=calcul_rast aspin=SOLaspect > slopein=SOLslope day=80 > beam_rad=b_rad.080 diff_rad=d_rad.080 refl_rad=r_rad.080/ > > The script start running but after a while, I always get the > same error > message : *Processus arrêté* (process stopped). > > > Here is my raster file properties : > > zone: 0 > datum: towgs84=0,0,0,0,0,0,0 > ellipsoid: grs80 > north: 6834498.4129157 > south: 6818891.28705492 > west: 658872.26712997 > east: 672363.87733357 > nsres: 0.19999905 > ewres: 0.20000015 > rows: 78036 > cols: 67458 > cells: 5264152488 > > Is my raster file too big? Is there a workaround? Actually, > I need to work on large area since I also want to compute > mountain shadows.
how much RAM do you have? Running 32 or 64 bit? Which operating system? Do the same commands work at a coarser resolution? 20000x20000 region size is known to work ok. anything bigger than about 45000x45000 gets into 64 bit/LFS territory. Hamish ps- 'g.region res=0.2 -a' will clean up/round off the messy resolution value, if you like. _______________________________________________ grass-user mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/grass-user
