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>
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