Le lundi 07 février 2011 19:57:28, Werner Reiche a écrit : > I'm using gdal_grid to create a 1200x796 pixel out from an input data set > of approximately 250,000 points. This takes about 90 minutes (30 minutes > for each r/g/b band). This seems to be unreasonably slow. Any ideas on > speeding it up? > > The command I am using is: > gdal_grid -txe -51.428009 -43.153992 -tye 46.112598 51.347198 -outsize 1024 > 796 \ -a nearest:radius1=0.01:radius2=0.01:angle=0.0:nodata=0.0 \ -l > rs2_file_1 -l rs2_file_2 -l rs2_file_3 \ > -of GTiff -ot Byte rs2_file.vrt test.tiff
This is a known limitation of the current gdal_grid. No easy workaround except reducing your raster size and/or point set. Or try an experimental patch available in http://trac.osgeo.org/gdal/ticket/2411 (based on r15061) but it won't apply on recent versions without adjustements. _______________________________________________ gdal-dev mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/gdal-dev
