r.relief
r.relief.scaling - Creates shaded relief from an elevation layer (DEM).
Raster (r.*)
ParameterRaster|input|Input elevation layer
ParameterNumber|altitude|Altitude of the sun in degrees above the horizon|0|90|30.0
ParameterNumber|azimuth|Azimuth of the sun in degrees to the east of north|0|360|270.0
ParameterNumber|zscale|Factor for exaggerating relief|None|None|1.0
ParameterNumber|scale|Scale factor for converting horizontal units to elevation units|None|None|1.0
ParameterSelection|units|Elevation units (overrides scale factor)|intl;survey
OutputRaster|output|Output shaded relief layer