Thanks for your help ! I tried the r.grow method and it works fine for me. The only problem that remains is that r.fillnulls takes very long. Let me show you my workflow with an SRTM tile as example:
r.in.srtm input=S50W075.hgt output=srtm g.region rast=srtm g.region res=00:00:03 r.grow input=srtm output=srtm_grow radius=10 new=9000 r.mapcalc "MASK=if(isnull(srtm_grow),0,1)" r.fillnulls input=srtm output=srtm_filled_mask r.fillnulls takes 19 minutes to process on Windows. (Grass 6.4 on Vista64, i7 920 with 12GB RAM). The CPU usage is only 13% (of one core) and memory usage is about 77 MB. Even if I put the Grass workspace on a RAM-Disk I have no signifikant performance improvement. On Ubuntu (same hardware) processing time for r.fillnulls is 17:30 min using 100% of one CPU core and 100MB RAM. Any ideas how I can speed up the process ? Thanks. -- View this message in context: http://osgeo-org.1803224.n2.nabble.com/Limit-r-fillnulls-to-interpolate-only-small-gaps-tp6040101p6056317.html Sent from the Grass - Users mailing list archive at Nabble.com. _______________________________________________ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user
