[GRASS-user] problem whit raster images

[Glynn Clements]

Hamish wrote:

> > usually during input the colors are getting separated into the "red", 
> > "green" and "blue" chanal (you can display these chanals as gray scale
> > 
> > images). For displaying you could use:
> >   d.rgb red=map.red green=map.green blue=map.blue
> > An alternative is to merge them first:
> >   r.composite red=map.red green=map.green blue=map.blue output=map.rgb
> >   d.rast map.rgb
> > (replace 'map' with your map name)
> 
> any ideas on how to output 3 R,G,B rasters into a single 3-band GeoTIFF
> without resolution loss? (ie no r.composite 256->32 col/band reduction)

r.out.ppm3, then convert the PPM to a GeoTIFF.

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