[GRASSLIST:80] Re: making a "true-color" landsat composite

[Markus Neteler]

Dylan Beaudette wrote:

>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?
>  
>
how do you like this LANDSAT:
 http://mpa.itc.it/markus/grass61/demos/
 -> LANDSAT 7 color boost
?

Markus