[GRASS-user] r.sun use - automaticcaly stopped process ?
hamish_b at yahoo.com
Wed Apr 17 14:03:38 PDT 2013
> I'm using r.sun for calculatin shadow and getting solar
> I've tried to run both command on my raster :
> /r.sun -s elevin=calcul_rast incidout=shadow day=80
> / 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
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.
ps- 'g.region res=0.2 -a' will clean up/round off the messy
resolution value, if you like.
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