Re: [GRASS-user] r.sun annual radiation

2011-09-06 Thread Salvatore Mellino
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

Re: [GRASS-user] r.sun annual radiation

2011-09-06 Thread Markus Neteler
On Tue, Sep 6, 2011 at 7:20 PM, Salvatore Mellino 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

Re: [GRASS-user] r.sun annual radiation

2011-09-06 Thread Salvatore Mellino
Hi Hamish, 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. If I want to add this effect to your script for global radiation, how can I do? And mo

Re: [GRASS-user] r.sun annual radiation

2011-09-05 Thread Hamish
Salvatore wrote: > thanks for the script, it works. I want to be sure that the > result is the global radiation map expressed in W/m2/yr (or > it is W/pixel/yr?). I compare it with ones made with ArcGis > and the values are differents. how much different? just by a few percent or wildly different

Re: [GRASS-user] r.sun annual radiation

2011-09-04 Thread Salvatore Mellino
Hi, thanks for the script, it works. I want to be sure that the result is the global radiation map expressed in W/m2/yr (or it is W/pixel/yr?). I compare it with ones made with ArcGis and the values are differents. Another question…the albedo effect is excluded? Thanks Salvatore Il giorno

Re: [GRASS-user] r.sun annual radiation

2011-08-31 Thread Markus Neteler
On Wed, Aug 31, 2011 at 9:59 AM, Markus Neteler wrote: > On Mon, Aug 29, 2011 at 2:08 PM, Salvatore Mellino > wrote: >> Dear Markus, >> >> I try to use rsun_crop.sh, but I received same error message, where I make a >> mistake? >> >> Computing radiation for day 075... >> Mode 2: integrated daily

Re: [GRASS-user] r.sun annual radiation

2011-08-31 Thread Markus Neteler
On Mon, Aug 29, 2011 at 2:08 PM, Salvatore Mellino wrote: > Dear Markus, > > I try to use rsun_crop.sh, but I received same error message, where I make a > mistake? > > Computing radiation for day 075... > Mode 2: integrated daily irradiation for a given day of the year > /Applications/GRASS-6.4.

Re: [GRASS-user] r.sun annual radiation

2011-08-29 Thread Salvatore Mellino
Dear Markus, I try to use rsun_crop.sh, but I received same error message, where I make a mistake? Computing radiation for day 075... Mode 2: integrated daily irradiation for a given day of the year /Applications/GRASS-6.4.app/Contents/MacOS/scripts/rsun_crop.sh: line 42: 27151 Segmentation fau

Re: [GRASS-user] r.sun annual radiation

2011-08-24 Thread Markus Neteler
On Wed, Aug 24, 2011 at 12:21 PM, Salvatore Mellino wrote: > Hi, > > I want to generate a cumulative annual map for solar radiation (W/m2/yr). It > is possible with r.sun? There is a script to do this? You can find a ascript here: http://www.grassbook.org/examples_menu2nd.php -> rsun_crop.sh If

[GRASS-user] r.sun annual radiation

2011-08-24 Thread Salvatore Mellino
Hi, I want to generate a cumulative annual map for solar radiation (W/m2/yr). It is possible with r.sun? There is a script to do this? Thanks, Salvatore___ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/gras