Hi Anna, >This could be potentially a problem described in >https://github.com/OSGeo/grass/pull/2534. >Could you try to run this with the changes in the PR?
I hopefully correctly applied this PR now here locally in my winGRASS. ;-) DEM: Airborne Laser Scan 1 x 1 m projection: 99 (MGI / Austria GK West) zone: 0 datum: hermannskogel ellipsoid: bessel north: 218281.5 south: 204874.5 west: 49389.5 east: 62610.5 nsres: 1 ewres: 1 rows: 13407 cols: 13221 cells: 177253947 *patched r.sun* r.sun elevation=laser_dgm@data aspect=laser_dgm_aspect@data slope=laser_dgm_slope@data horizon_basename=horangle horizon_step=30 beam_rad=beam_rad_166 day=166 Number of threads <1> Mode 2: integrated daily irradiation for a given day of the year Using Linke constant: 3.000000 Using albedo constant: 0.200000 Using slope map <laser_dgm_slope@data> Using aspect map <laser_dgm_aspect@data> *elevation - computional region https://pasteboard.co/g82fQtvdcbeE.png *aspect - computional region https://pasteboard.co/jV36f8fb1xoY.png *beam irr 166 - computional region https://pasteboard.co/no7YUTqNtEPg.jpg *aspect zoom to the high altitudinal south oriented mountain face with a high slope gradient and high local geomorphological variability https://pasteboard.co/u10fbgnUU4nX.png *slope zoomed to the high altitudinal south oriented mountain face with a high slope gradient and high local geomorphological variability https://pasteboard.co/5FeilT6qRj7t.png *slope zoomed only 50-90 degrees on the high altitudinal south oriented mountain face with a high slope gradient and high local geomorphological variability https://pasteboard.co/ssmNEUWyagYe.png *beam irr 166 zoom on the high altitudinal south oriented mountain face with a high slope gradient and high local geomorphological variability https://pasteboard.co/PVSjFWy2qcOK.png later on I'll post a screenshot of the not patched r.sun in 8.2.1 best helli _______________________________________________ grass-user mailing list grass-user@lists.osgeo.org https://lists.osgeo.org/mailman/listinfo/grass-user
