r.path
r.path.coordinate.txt - Traces paths from starting points following input directions.
Raster (r.*)
QgsProcessingParameterRasterLayer|input|Name of input direction
QgsProcessingParameterEnum|format|Format of the input direction map|auto;degree;45degree;bitmask|false|0|false
QgsProcessingParameterRasterLayer|values|Name of input raster values to be used for output|None|True
QgsProcessingParameterRasterDestination|raster_path|Name for output raster path map
QgsProcessingParameterVectorDestination|vector_path|Name for output vector path map
QgsProcessingParameterPoint|start_coordinates|Map coordinate of starting point (E,N)|None|False
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
