[GRASS-user] Accentuating/adding topography to a raster image?

[Jachym Cepicky]

Hi,

I use this approach:

d.his h=your_map i=aspect

or

d.his h=your_map i=r_shaded_relief

or run nviz and set the light source ;-)

jachym


On Sat, Aug 12, 2006 at 02:45:22AM -0700, Jonathan Greenberg wrote:
> We're trying to add in a bit of topographic shading/illumination into an
> image, and I was hoping to get some feedback on what algorithms work the
> best?  I tried a hillshade approach in ENVI, was pretty unimpressed with it.
> Any suggestions for a GRASS approach?  Run r.sun and do some sort of pixel
> weighting?
> 
> --j
> 
> --
> 
> Jonathan A. Greenberg, PhD
> NASA Postdoctoral Researcher
> NASA Ames Research Center
> MS 242-4
> Moffett Field, CA 94035-1000
> Phone: 415-794-5043
> AIM: jgrn3007
> MSN: jgrn3007 at hotmail.com
> 
> 
> 
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-- 
Jachym Cepicky
e-mail: jachym.cepicky at centrum.cz
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