[GRASS-dev] postscript color output

Glynn Clements glynn at gclements.plus.com
Thu Jul 6 18:30:12 EDT 2006


Hamish wrote:

> ps.map (legends) output colors as
> 
> if(do_color)
>   fprintf(PS.fp, "%.2f %.2f %.2f C\n", 
>             (double)R/255., (double)G/255., (double)B/255.);
> else {
>   grey_color_val = (.3 * (double)R + .59 * (double)G 
>                      + .11 * (double)B)/255.;
>   fprintf(PS.fp, "%.2f setgray\n", grey_color_val);
> }
> 
> "0.00" is only 100 levels; should these be changed to %.3f so none of
> the 256 color resolution is lost?

Yes.

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




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