[GRASSLIST:455] RE: dem rescale

[ecollage]

Hi

Are you working in a UTM Projection? 

Does r.describe -r reveal a range of 1-65000 or 1-255?

What color table are you using on the import file? If it's grey.eq, all
values above 255 will appear white. Try changing the color table to
grey/gyr/ryg and try again. Should work.

Sujoy

-----Original Message-----
From: owner-GRASSLIST at baylor.edu [mailto:owner-GRASSLIST at baylor.edu] On
Behalf Of Martin Wegmann
Sent: Friday, June 20, 2003 11:07 PM
To: GRASSLIST(engl)
Subject: [GRASSLIST:446] dem rescale

Hello, 

is there a way to display all values of a dem? the original range was
1-65000 
(export from ERDAS), but only values up to 255 are displayed in the
monitor 
even though d.what.rast is prompting values for the white areas. Nviz is

showing these values above 255 as plateau. 
When I rescaled the dem to values between 1-255 the whole image can be
seen 
but in a pretty coarse resolution in nviz. 
When I visualize it in ERDAS I get a better 3D image and I can recognize

valleys.

any idea how to display all values?

thanks in advance, cheers Martin