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: [EMAIL PROTECTED] Tel. +39 0165 215884 Fax +39 0165 215800
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