[GRASSLIST:3610] texture analysis, r.texture

[Eric Pante]

Dear listers,

I am a GRASS (and Linux) beginner trying to run a texture analysis on 
640*480 TIFF images taken from a Hi-8 camera. I imported my pictures using 
"r.in.tiff", which created 3 files (RGB).  When I run my texture analysis 
using "i.texture" I actually get results ; on the other hand, when I want to 
get a graphical representation of texture features using "r.texture", I get 
empty files. When I try to display them, I get a nice pink screen ...
does any one have any idea why i get results with i.texture, and not with 
r.texture, even though r.texture uses the algorythm of i.texture ? does this 
have anything to do with the fact that I run my calculations on RGB files, 
and in that case, is there a way to get one unique GRASS raster file from my 
TIFF (I unsuccessfully tried "r.in.gdal")?

Thank you very much,
Eric Pante, ericpante at hotmail.com