Grass 5.0b7 + NVIS2.2 = WOW!

Malcolm Williamson malcolm at cast.uark.edu
Mon Apr 24 16:32:19 EDT 2000


Eric,
Set your region to encompass both quadrangles (g.region). Then, run
r.patch to patch the two DEMs together (r.patch in=dem1,dem2
out=newdem). The color table will be lifted from the first map patched.
You may have a very slight gap between the DEMs; we'll cross that bridge
later if you have that problem :)

Best regards,
	-Malcolm

Malcolm D. Williamson                       malcolm at cast.uark.edu
Center for Advanced Spatial Technologies      Voice: 501-575-2734
12 Ozark Hall                                   Fax: 501-575-5218
University of Arkansas, Fayetteville AR 72701      
http://www.cast.uark.edu/


Eric Mitchell wrote:
> 
(lines deleted)

> I have a question, though.  For raster format elevation
> data, I'm working off of 7.5min USGS dems.  Is there an
> easy way to merge neighboring raster maps without losing
> too much resolution?  I've tried using the CELL driver,
> but the resulting raster data loses a lot of the contour
> of the original data.  Is there a better method available?
> 
> P.S. I'll take beta7 for another spin on the SGI when I
> get the chance.
> 
> -- ebm
> +=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=+
> | Eric B. Mitchell         mailto:emitchell at altaira.com |
> | tel: (301) 809 - 3534    Altair Aerospace Corporation |
> | tel: (800) 7 - ALTAIR    4201 Northview Dr. Suite 410 |
> | fax: (301) 805 - 8122    Bowie, MD  20716             |
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