Hi list,
This should simple, but I failed to make it work. I simply want a black
pixels in a RGB GeoTIFF to become transparent or white. Using GDAL 1.6.3.
I'm trying
gdalwarp -srcnodata 0 -dstalpha in.tif out.tif
I also tried (since it's RGB)
gdalwarp -srcnodata "0 0 0" -dstalpha in.tif out.tif
I always get
0...10...20...30...40...50...60...70...80...90...100 - done.
but no transparency is actually added to the output tif.
References:
http://www.gdal.org/gdalwarp.html
http://lists.maptools.org/pipermail/fwtools/2007-February/000691.html
Any clue what's missing?
Thanks a lot!
Alex
--
Alexandre Leroux, M.Sc., ing.
MSC Data Management Section /
Section de gestion des données du SMC
Environment Canada / Environnement Canada
alexandre.ler...@ec.gc.ca - (514) 421-5024
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