.TH topic_solar 1grass "" "GRASS 7.8.5" "GRASS GIS User's Manual" .SH Topic: solar .TS expand; lw60 lw1 lw60. T{ r.horizon T} T{ Computes horizon angle height from a digital elevation model. T} .sp 1 T{ r.sun T} T{ Solar irradiance and irradiation model. T} .sp 1 T{ r.sunhours T} T{ Calculates solar elevation, solar azimuth, and sun hours. T} .sp 1 T{ r.sunmask T} T{ Calculates cast shadow areas from sun position and elevation raster map. T} .sp 1 .TE .PP \fISee also the corresponding keyword solar for additional references.\fR .PP Main index | Topics index | Keywords index | Graphical index | Full index .PP © 2003\-2020 GRASS Development Team, GRASS GIS 7.8.5 Reference Manual