r.stream.order r.stream.order - Calculate Strahler's and Horton's stream order Hack's main streams and Shreeve's stream magnitude Raster (r.*) ParameterRaster|stream_rast|Input map: stream mask|False ParameterRaster|direction|Input map: direction map|False ParameterBoolean|-a|Use flow accumulation to trace horton and hack models|False ParameterBoolean|-z|Create zero-value background|False OutputRaster|strahler|Output basin map (Strahler) OutputRaster|shreve|Output basin map (Shreve) OutputRaster|horton|Output basin map (Horton) OutputRaster|hack|Output basin map (Hack) OutputRaster|topo|Output basin map (Topo)