r.circle
r.circle - Creates a raster map containing concentric rings around a given point.
Raster (r.*)
ParameterString|coordinate|The coordinate of the center (east,north)|0,0
ParameterNumber|min|Minimum radius for ring/circle map (in meters)|None|None|10
ParameterNumber|max|Maximum radius for ring/circle map (in meters)|None|None|20
ParameterString|mult|Data value multiplier|1
ParameterBoolean|-b|Generate binary raster map|False
OutputRaster|output|Name for output raster map