[Gdal-dev] Change indicated colour maps into gray gradient

[Frank Warmerdam]

shortyII wrote:
> Hi,
> 
> Is it possible to use GDAL to change a GeoTIFF from
> indicated colour to a gray gradient?
> 
> I've looked at doc and e-mail archives for several hours but I haven't
> found anything yet - hoping someone can spend 30 seconds on the answer!

Shorty II,

The easiest way to accomplish this is to translate to a format that does
not support palettes, and then back to GeoTIFF.

eg.
gdal_translate your.tif -of FIT your.fit
gdal_translate your.fit your.tif

Best regards,
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