On 11-03-09 11:51 AM, Wendell Turner wrote:
Do any of the gdal utilities crop an image on non-square boundaries? I use gdal_translate with -projwin ulx uly lrx lry to crop an image that is square (left and right edges are vertical, and the top and bottom edges are horizontal). Is there a command that will crop other shapes, for instance a diamond shape, where the edges are not horizontal/vertical? If it must be done by programming (pref. Python), is there a sample that I could use to start with?
Wendell, I think gdalwarp with -crop_to_cutline and a cutline specified with the shape will accomplish what you want. http://www.gdal.org/gdalwarp.html The cutline comes from an OGR supported file but this can be as simple as a .csv file with a WKT geometry in it. The -crop_to_cutline may be new to 1.8. Best regards, -- ---------------------------------------+-------------------------------------- I set the clouds in motion - turn up | Frank Warmerdam, warmer...@pobox.com light and sound - activate the windows | http://pobox.com/~warmerdam and watch the world go round - Rush | Geospatial Programmer for Rent _______________________________________________ gdal-dev mailing list gdal-dev@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/gdal-dev
