Color map problems

[Angus Carr]

This sounds like a problem for r.colormode float. 
try that, then d.rast the gif file again.

The problem is that grass uses a 256 colour colormap, using (by default) a
fixed set of colors that represent a systematic selection through the
colours. It is not optimized for any particular image. Your gif file is
being forced to use this color map, rather than its own. r.colormode float
will allowthe image to use its own colormap. The rest of the system will
retain the normal colormap, so thing will flash in and out all the time.
Try it....

Angus Carr,
Masters of Forestry student

On Tue, 25 Feb 1997, David Mandel wrote:

> 
> I'm starting to play with GRASS after several months away from it.
> 
> If I take a gif file (not necessarily map data) and display it with xv, 
> xpaint, or netscape it looks great.  If I import it into GRASS and 
> display it with d.rast it looks awful.  The information is correct, but my
> color map is very poor.  Is there an easy way of getting a better color
> map, possibly from X.  It would take me all day to edit the color table
> with d.colors.  Indeed, even a text editor wouldn't work very well,
> because I simply want to make things look like they do in the other
> packages.  Doing this with an editor would be a pain.
> 
>                                              Dave Mandel
> 
> 
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