I have created a ticket and attached a patch to resolve this. http://trac.osgeo.org/gdal/ticket/5087
On Wed, May 15, 2013 at 11:12 AM, Etienne Tourigny <[email protected]>wrote: > I have just noticed that destination nodata value is not set when > -dstnodata option is not used in gdalwarp. > > This can be problematic when warping a dataset with no data values, as the > result can be different from expected, if -dstnodata is not set. > gdalwarp does use source nodata pixels if -srcnodata is not used. > > I consider this as a bug (or at the very least a limitation), because one > cannot warp a dataset in an automatic fashion and get expected output (with > same nodata value as input). > > Would it be OK to copy them over if -dstnodata is not used, or would there > be problems with doing this? Or perhaps a new argument -copynodata could be > added if there is fear of disruption. > > cheers > Etienne >
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