On 24/08/2010 21:33, Even Rouault wrote:
Try reducing under 2000 and it should work better. A too big value for the -wm
parameter can even sometimes affect speed negatively, and that'd probably the
case for your example where you are merging a lot of individual files into a
big one.
Just to add that this counter-intuitive behaviour is mentioned at:
http://trac.osgeo.org/gdal/wiki/UserDocs/GdalWarp#WillincreasingRAMincreasethespeedofgdalwarp
You could use: --debug on, and then observe how Src and Dst windows
change depending on the chosen -wm value. (There is little point in
having the Src window bigger than the input raster.)
Hermann
_______________________________________________
gdal-dev mailing list
[email protected]
http://lists.osgeo.org/mailman/listinfo/gdal-dev
