r.drain
Traces a flow through an elevation model on a raster map.
Raster (r.*)
QgsProcessingParameterRasterLayer|input|Elevation|None|False
QgsProcessingParameterRasterLayer|direction|Name of input movement direction map associated with the cost surface|None|True
QgsProcessingParameterPoint|start_coordinates|Map coordinates of starting point(s) (E,N)|None|True
QgsProcessingParameterFeatureSource|start_points|Vector layer containing starting point(s)|0|None|True
QgsProcessingParameterBoolean|-c|Copy input cell values on output|False
QgsProcessingParameterBoolean|-a|Accumulate input values along the path|False
QgsProcessingParameterBoolean|-n|Count cell numbers along the path|False
QgsProcessingParameterBoolean|-d|The input raster map is a cost surface (direction surface must also be specified)|False
QgsProcessingParameterRasterDestination|output|Least cost path
QgsProcessingParameterVectorDestination|drain|Drain