Hi, It does really work for others. I just verified with GDAL 3.1.0dev and 2.4.2 on Windows. Could you repeat the test carefully with the bare minimum
gdalwarp -dstalpha without_alpha.tif with_alpha.tif If it does not work please arrange a reproducible test case for us by telling how to get exactly same GDAL version as you have, and point same source tiff file as input. -Jukka Rahkonen- Jack Glendening wrote > For gdalwarp (GDAL 2.3.1), using -dstalpha (hoping to get transparent > pixels outside the original image area) ala > > gdalwarp -dstalpha -srcnodata 0 -t_srs EPSG:4326 in.tif out.tif > > for an input geotiff RGB image (created by gdal_translate) I get an RGB > output image, not an RGBA as I expected. From googling, it appears > -dstalpha works for others. This seems so simple, cannot understand > what could be going wrong. > > Jack > > > _______________________________________________ > gdal-dev mailing list > [email protected] > https://lists.osgeo.org/mailman/listinfo/gdal-dev -- Sent from: http://osgeo-org.1560.x6.nabble.com/GDAL-Dev-f3742093.html _______________________________________________ gdal-dev mailing list [email protected] https://lists.osgeo.org/mailman/listinfo/gdal-dev
