At this point it sounds like you are getting squarely into raster geoprocessing. Unless you need to do it standalone for some reason, you might consider using GRASS or QGis with the GRASS extensions as GRASS is a fantastic raster analysis package.
Craig From: gdal-dev-boun...@lists.osgeo.org [mailto:gdal-dev-boun...@lists.osgeo.org] On Behalf Of Seth G Sent: Tuesday, October 20, 2009 2:06 AM To: gdal-dev@lists.osgeo.org Subject: [gdal-dev] GDAL Sieve Script Hi, I have been looking at the http://www.gdal.org/gdal_sieve.html script, and it almost meets my requirements. However rather than replacing small pixel areas with neighbouring values, I'd like to set all these pixels to a "no data" or 0 value. I guess I could use the script as it is, and then run a raster analysis to find the difference between the two grids to create a mask, but just wondering if there was another way. I need to remove areas of land that are not economically viable to plant bioenergy crops as they are too small. Thanks for any help. Seth
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