## Topic: solar

Note: see also the corresponding keyword solar for additional references.

r.horizon | Computes horizon angle height from a digital elevation model.
r.sun | Solar irradiance and irradiation model.
r.sunhours | Calculates solar elevation, solar azimuth, and sun hours.
r.sunmask | Calculates cast shadow areas from sun position and elevation raster map.

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© 2003-2016 GRASS Development Team, GRASS GIS 7.0.3 Reference Manual