[gdal-dev] gdal_grid - very slow

[Werner Reiche]

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 

  		 	   		  
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