I forgot an important question: does anyone have had better experiences with it? Maybe it's only a problem with my computer or my grass build...
2009/2/19 G. Allegri <[email protected]>: > Hello list. > Yesterday I needed to use v.rast.stats on a 1793 areas covering a > 4415x6632 raster (with resolution 50m/pixel). I've used it without > extended statistics but the processing time was, with an euphemism, > very very long. After 5 hours it wasn't finished yet. As I needed it > for today morning I've decided to reproduce it with ArcGIS: 40 > seconds. I've tried to investigate what was going wrong, the > bottleneck, but at the end I suppose that it's a problem of the script > itself (the looping chain of r.mapcalc and r.univar, the creation and > deletion of the MASK in each loop). > Is there any way to improve the performance of v.rast.stats? Should we > rewrite it in C and avoid the use of MASKs? > > I must say that this has been a shock for my collegues seeing this > impressive performance differences... And I would like to contribute > in healing them! :) > > Giovanni > _______________________________________________ grass-user mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/grass-user
