Maximum Flow Path Length

Author: O.Conrad (c) 2016
Menu: Terrain Analysis | Hydrology | Flow Accumulation

Description

This tool calculates the maximum upstream or downstream distance or weighted distance along the flow path for each cell based on 'Deterministic 8 (D8)' (O'Callaghan and Mark 1984) flow directions.

References

O'Callaghan, J.F. & Mark, D.M. (1984): The extraction of drainage networks from digital elevation data. Computer Vision, Graphics and Image Processing, 28:323-344. doi:10.1016/S0734-189X(84)80011-0.

Parameters

	Name	Type	Identifier	Description	Constraints
Input	Elevation	grid, input	`ELEVATION`	-	-
Input	Weights	grid, input, optional	`WEIGHTS`	-	-
Output	Flow Path Length	grid, output	`DISTANCE`	-	-
Options	Grid System	grid system	`PARAMETERS_GRID_SYSTEM`	-	-
Options	Direction of Measurement	choice	`DIRECTION`	-	Available Choices: [0] downstream [1] upstream Default: 0

Command Line


Usage: saga_cmd ta_hydrology 27 [-ELEVATION ] [-WEIGHTS ] [-DISTANCE ] [-DIRECTION ]
  -ELEVATION:	Elevation
	grid, input
  -WEIGHTS:  	Weights
	grid, input, optional
  -DISTANCE: 	Flow Path Length
	grid, output
  -DIRECTION:	Direction of Measurement
	choice
	Available Choices:
	[0] downstream
	[1] upstream
	Default: 0