[gdal-dev] Use of gdalwarp to make GeoTiff transparent is flipping the image

[Jukka Rahkonen]

Liglio <liglio <at> pobox.com> writes:

> 
> Hi,
> 
> I used the command "gdalwarp -dstalpha -srcnodata 255 -dstnodata 0 image.tif
> transp_image.tif" to make a color GeoTiff Image became transparent, but it
> is flipping the image horizontally. What I am doing wrong? Can I unflipp the
> image?
> 
> Thanks.
> 
> <http://osgeo-org.1560.x6.nabble.com/file/n5255474/image299.png> 
> <http://osgeo-org.1560.x6.nabble.com/file/n5255474/transp_image.png> 

Could you add the gdalinfo report of the original and warped image?

-Jukka Rahkonen-