[GRASS-user] r.sun with shadowing effects

[Odoardo Zecca]

Hi all,

I need to calculate the solar radiation (with r.sun) of a relatively small
area taking into account the shadowing effect of reliefs spread in a much
larger area. In order to be able to get a high resolution map of the area of
interest, or even just the values relatives to some particular sites, is
there a way to avoid the long computational time needed for areas I'm not
interested in?
May be I can use r.los for selecting the reliefs that actually cast a shadow
on the area of interest?

Thanks in advance for your answer.

Odoardo Zecca

-- 
Dott. Odoardo Zecca
Institut Agricole Régional
Regione La Rochère 1/A
11100 Aosta
email: o.zecca at iaraosta.it
Tel. +39 0165 215884
Fax  +39 0165 215800
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.osgeo.org/pipermail/grass-user/attachments/20071004/78f25cd8/attachment.html