On Fri, Oct 21, 2011 at 7:08 PM, Sergio Gollino <[email protected]> wrote: > Hi, this is my first post and I hope someone could help me.
Welcome here! > I'm using r.sun for computing a solarmap of the alpine arch in Friuli > Venezia Giulia (IT). > I'm using this command: > > r.sun -s elevin=dem_40_fvg_wgs84 aspin=asp_fvg_wgs84 slopein=slo_fvg_wgs84 try to avoid aspin= and slopein= since r.sun can also calculate those internally. > lin=1.5 alb=0.2 horizonstep=10 beam_rad=irr_fvg1 insol_time=ins_fvg1 > diff_rad=diffuse_irr__fvg1 refl_rad=ground_refl_fvg1 > glob_rad=total_irr_fvg1 day=1 step=0.25 dist=1.0 numpartitions=1 > --overwrite ... this part looks ok. > But the resultant map have a lot of artifacts (lines of pixels with wrong > values, see the attachment) > http://osgeo-org.1803224.n2.nabble.com/file/n6917645/r.sun.jpg > > I've tried to delete "aspin" and "slopein" parameters and i've changed > "step" and "dist" with no results. Mhh. So please check the DEM then bu calculating a shaded map with r.shaded.relief. Perhaps the artifacts are therein? > I'm using Grass6.4.1. My OS is W7 64bit. I had no such problems in a close-by area with the same version (but Linux which should not matter here). Markus _______________________________________________ grass-dev mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/grass-dev
