r.buffer
r.buffer - Creates a raster map layer showing buffer zones surrounding cells that contain non-NULL category values.
Raster (r.*)
ParameterRaster|input|Input raster layer|False
ParameterString|distances|Distance zone(s) (e.g. 100,200,300)|
ParameterSelection|units|Units of distance|meters;kilometers;feet;miles;nautmiles
ParameterBoolean|-z|Ignore zero (0) data cells instead of NULL cells|False
OutputRaster|output|Buffer