[GRASSLIST:64] making a "true-color" landsat composite

[Dylan Beaudette]

Hi everyone,

I was working on constructing some "true color" landsat composite images today 
from bands 3,2,1 -- and came across some strange inconsistencies. Data from 
one source produces "nice" true color images:

http://casoilresource.lawr.ucdavis.edu/drupal/node/211

whereas, another source produces somewhat muddy true color composites. I tried 
playing a bit with an equalized grey colormap for each band via r.colors 
color=grey.eq with the following results:

http://casoilresource.lawr.ucdavis.edu/drupal/node/215


Does anyone have any tips on how to tweak color ramps for the various bands so 
as to get a better looking "true color" composite?

Thanks!


-- 
Dylan Beaudette
Soils and Biogeochemistry Graduate Group
University of California at Davis
530.754.7341