Sorry again, I forgot to ask you about the Linke turbidity atmospheric coefficient. Is it included into the script? and which is the value used? (3.0 ?)
Thanks again, Salvatore Il giorno 06/set/2011, alle ore 19:53, Markus Neteler ha scritto: > On Tue, Sep 6, 2011 at 7:20 PM, Salvatore Mellino > <[email protected]> wrote: > >> now I can't verify in which way the sun map made with arcGIS was done >> (albedo, >> atmospheric turbidity…) maybe the differences depend on terrain shadow effect >> that I have not considered in grass map. > > Depending on your terrain that can make a huge difference. > See for example (Alpine region next to my home): > > http://gis.cri.fmach.it/gis-analysis/ > -> Solar radiation based on high resolution DEM > >> If I want to add this effect to your script for global radiation, how can I >> do? > > Just add the -s flag to r.sun. > >> And moreover, will your script calculate automatically slope and aspect >> from DTM or it use the default values? > > It calculates slope and aspect from DTM automatically. > > Markus _______________________________________________ grass-user mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/grass-user
