[GRASS-user] Not being able to produce decent-look color-composites

Hamish hamish_b at yahoo.com
Mon Feb 13 14:36:40 EST 2012

Luisa wrote:
> I'have 3 layers of Landsat (Green, Red and Near-Infrared) and
> I'm trying to produce a false-color composite (r.composite( with
> those but... I'm getting very frustrated because I'm producing
> very bad look composites. My layers are reflectances from 0-1.8
> or something. Shall I rescale them to 0-255?

yes (r.rescale). also once you've done that use r.colors to
set them to use the grey255 color rules.


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