[Qgis-user] solar potential

[Siki Zoltan]

Hi Szilard,

did you try the nativ GRASS command without QGIS toolbox?
Zoltan

On Tue, 3 Mar 2015, Szabo Szilard wrote:

> Hi!
> Does anyone has some experience with the r.sun GRASS option (Processing
> toolbar). I am strugling with the results because they are not reasonable.
> Data can be calculated for a day and in January the solar income is greater
> than in July ...
> I have tried with a national CRS (EPSG 23700) and with WGS84 (4326) but all
> output seems a bit strange (too small and the issue of January-July).
>
> Do you have idea what am I doing wrong?
> DSM: 20 cm resolution
> objects: a building with roof planes derived from photogrammetric technique
> QGIS 2.6.1
> Win 8.1
>
> DSM is here (EPSG 4326):
> https://share.tresorit.com/?0024vtkidgwfi9ib4u02i883&GNNzY6Ig7hqNHeIFeYPP69CIIDynxO9L&1&dXVQoIiKa3juWxNm8I4UnbvuUffB6voJuoBqxyE9T2GgXjtgfGsmV8FWLKpVPkCl#VQr6AtH1cY2D1VqWMDnokthlHd1AQ5I4sLWQ7+EUlcs=&ZGVtX25lazN3Z3MudGlm
>
> Thanks in advance
> -- 
> Dr. Szilard SZABO
> associate professor, head of department
> Department of Physical Geography and Geoinformation Systems
> University of Debrecen
> https://www.researchgate.net/profile/Szilard_Szabo/?ev=hdr_xprf
> Publications <https://vm.mtmt.hu/search/slist.php?lang=0&AuthorID=10000172>
>