Hamish and co: Thanks -- already went through the long, arduous task of running r.horizon -- I think the main benefit is that, unlike r.sun, you can set a fixed search window size (hint hint, this would be a nice feature to add to r.sun) -- my understanding is that for each pixel in a DEM, r.sun will search through every other pixel in the entire image, correct?
On the subject of r.sun and r.horizon, do I want to enable the -s flag or does r.sun use r.horizon outputs as long as the horizons and horizon steps are listed as parameters? --j On Fri, Jul 16, 2010 at 10:20 PM, Hamish <[email protected]> wrote: > Jonathan wrote: >> Is is possible to use r.horizon steps >> that are in a different mapset >> with r.sun? How would I use the prefix command, >> something like: >> >> myhorizonpref...@anothermapset >> ? > > not without a new r.sun option, but you can bypass needing the @mapset > part by adding the other mapset to the map search path with the g.mapsets > module. > > see the r.sun page in the GRASS Wiki for some comments/tests on the > actual effectiveness of using r.horizon vs. how many maps you need vs. > the delays due to overhead of having that many maps open to maintain > good resolution. (stuff to think about, but I can't say if it is overall > a win or not) > > > Hamish > > > > _______________________________________________ grass-user mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/grass-user
