[GRASS-user] Changing colour tables

Dear All,
I am having problems with changing color rules for a raster map. I have three different DEM's obtained from different sources and i have set the color for each as predefined color rule 'contour'. My problem is that I want to have all the 3 DEM's use the same color scheme i.e., each height range (700-800m, 800-900m and so on) in all the rasters is represented by the same color. Could somebody please help me with this. Also, I want to change the color table so that it uses absolute values instead of relative values.
Thank You very much in advance..

Pawan Datta

pawan datta napisaƂ(a):

Dear All,
I am having problems with changing color rules for a raster map. I have three different DEM's obtained from different sources and i have set the color for each as predefined color rule 'contour'. My problem is that I want to have all the 3 DEM's use the same color scheme i.e., each height range (700-800m, 800-900m and so on) in all the rasters is represented by the same color. Could somebody please help me with this. Also, I want to change the color table so that it uses absolute values instead of relative values.
Thank You very much in advance..

Pawan Datta

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simply prepare rule file for map with hihger difference between lower and upper values with:

0 0 128 0
100 0 200 0
etc

than use:

r.colors map=map_to rast=map_from
Jarek