HamishB wrote: > > Odoardo Zecca wrote: > >> 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? > > I don't think so (at least not without modifying the code), but I would be > interested in the same functionality. >
There is some hope: from JRC I received an unpublished r.sun2 + r.horizon which separates (the slow) horizont calculation from the (much faster) energy calculations. Run r.horizon once and then r.sun2 as often as you need. I'll check if I can put it into GRASS Addons SVN. Markus -- View this message in context: http://www.nabble.com/r.sun-with-shadowing-effects-tf4569151.html#a13103922 Sent from the Grass - Users mailing list archive at Nabble.com. _______________________________________________ grassuser mailing list [email protected] http://grass.itc.it/mailman/listinfo/grassuser
