[GRASS-user] Is mosaicing 24 bit images possible in Grass 6.2?

[Glynn Clements]

Moritz Lennert wrote:

> > You will lose information if you use r.composite, 
> 
> Just for my understanding: if you set levels to 256, you won't lose 
> information, or ?
> 
> It will just make displaying the result very slow.

Correct.

That assumes that the bands are limited to 256 levels. If you have
more than that, it is impossible to generate a composite image without
losing precision, as r.composite doesn't allow more than 256 levels. 
There isn't really much point; the only reason for generating a
composite image is for display. For analysis, you are better off using
separate bands.

-- 
Glynn Clements <glynn at gclements.plus.com>