[GRASS-user] Application of r.color

[Micha Silver]

On 10/01/2010 04:16 PM, Luis Lisboa wrote:
> Hi there
>
> I have a script where I create a map (using mapcalc) and I want to 
> attribute a color (gray for instance) but it ranges from 0 to 5 so I 
> cannot attribute gray0-1 neither gray0-255. What can I do to attribute 
> a color table that stretches its color attibution to the image max and 
> minimum values?
>
How about creating a color rules file with percentages (instead of 
values), then, regardless of the actual raster values, the colors will 
be "automatically" spread between the min and max color. i.e.
0% 0 0 0
100% 255 255 255
This will create a spread of colors from black to white. Now in your 
script just apply this rules file. If the raster contains 5 values, they 
will get colored black, dark grey, mid grey, light grey, and white.

> Thanks
>
> Luis
>
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-- 
Micha Silver
Arava Development Co. +972-52-3665918
http://surfaces.co.il


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