Hello, I crop a 3 band raster by a polygon with the following formula : /gdalwarp -of GTiff -cutline polygon.shp -cl polygon input.tif output.tif / But pixels outside my polygon are assigned the 0 value. I'd like them to have nodata
If I put the -dstnodata 0 option : /gdalwarp -of GTiff -cutline polygon.shp -cl polygon input.tif output.tif -dstnodata 0/, all the pixels in each of the 3 bands that contain the 0 value will be turned to nodata, even if they are contained in my polygon. Hence, 127 0 222 will become 127 nodata 222 or 0 127 222 will become nodata 127 222 How to put the nodata value only outside my polygon ? Thanks a lot in advance ! Mathieu -- View this message in context: http://osgeo-org.1560.x6.nabble.com/Cropping-a-raster-by-a-polygon-only-nodata-outside-polygon-wanted-tp5181426.html Sent from the GDAL - Dev mailing list archive at Nabble.com. _______________________________________________ gdal-dev mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/gdal-dev
