[Gdal-dev] gdal_merge.py Gtiff files with -pct losing color
jluis at ualg.pt
Wed Dec 6 16:32:13 EST 2006
Matt Wilkie wrote:
>> There is nothing wrong with GDAL. What happens is that the file has a
>> color palette with only zeros. So naturally it comes up as a black
> Then why do other programs like ossim, xnview, and imagemagick display
> it properly? With xnview I can view and modify the colour pallette.
The default Windows viewer ("picture and fax previewer") also displays
But Matlab is on the "black team". And it see the colormap like this
0.0039 0.0039 0.0039
0 0 0
0 0 0.0013
0 0 0.0026
With a maximum of 0.0039. If I normalize this colormap (devided it by
0.0039) than also
Matlab displays it properly.
Probably, that's what the others do as well.
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