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I have a dsm and dem for an area. When I try to run r.sun module to calculate solar radiation I receive this error message in the picture. This problem does not occour when I don input slope and aspect raster maps which are created from DEM. What is the problem with aspect and slope maps??error picture

  • From the error message, the computer is running out of memory running the module. The region settings (13342 rowsx16634 cols) mean that each raster has over 220 million cells. If the rasters are integer, then each one would require about 900MB of memory. FLoating point rasters, twice as much. – Micha Apr 25 '15 at 12:04
  • Please verify your grasswiki.osgeo.org/wiki/Computational_region – markusN Apr 25 '15 at 12:44

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