illumination

[Brian Culpepper]

95?03?06?16?pm at bnr.ca>
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>
> Hello grassusers,
> I'm using the Spearfish database to try out some wildland fire risk mapping
> methods. For one of them I need to know the insolation. Does any one know a
> method to generate a illumination map using a given solar elevation angle ?
> Thanks a lot, Moniek Vesseur.
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Moniek Vesseur,
        I believe the GRASS contributed shell script <shade.rel.sh> will
solve your problems. The following is the definition from g.manual:

shade.rel.sh - Creates a shaded relief map based on current
     resolution settings and sun altitude and azimuth values
     entered by the user.
     (GRASS Shell Script)

Have a great day:)

--
R. Brian Culpepper                                Research Specialist
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