Curvature Classification

Author: O.Conrad (c) 2001
Menu: Terrain Analysis | Terrain Classification

Description

Landform classification based on the profile and tangential (across slope) curvatures.

References

Dikau, R. (1988): Entwurf einer geomorphographisch-analytischen Systematik von Reliefeinheiten. Heidelberger Geographische Bausteine, Heft 5.
R.A. MacMillan & P.A. Shary (2009): Landforms and Landform Elements in Geomorphometry. In: Hengl, T. & Reuter, H.I. [Eds.]: Geomorphometry - Concepts, Software, Applications. Developments in Soil Science, Vol.33:227-254. doi:10.1016/S0166-2481(08)00009-3.

Parameters

	Name	Type	Identifier	Description	Constraints
Input	Elevation	grid, input	`DEM`	-	-
Output	Curvature Classification	grid, output	`CLASSES`	-	-
Options	Grid System	grid system	`PARAMETERS_GRID_SYSTEM`	-	-
	Threshold Radius	floating point number	`STRAIGHT`	Curvature radius threshold [map units] to distinct between straight and curved surfaces.	Minimum: 0.000010 Default: 2000.000000
	Vertical Curvature	choice	`VERTICAL`	-	Available Choices: [0] longitudinal curvature [1] profile curvature Default: 1
	Horizontal Curvature	choice	`HORIZONTAL`	-	Available Choices: [0] cross-sectional curvature [1] tangential curvature Default: 1
	Smoothing	integer number	`SMOOTH`	Smoothing kernel radius. No smoothing will be done, if set to zero.	Minimum: 0 Default: 0

Command Line

Usage: saga_cmd ta_morphometry 4 [-DEM ] [-CLASSES ] [-STRAIGHT ] [-VERTICAL ] [-HORIZONTAL ] [-SMOOTH ]
  -DEM:        	Elevation
	grid, input
  -CLASSES:    	Curvature Classification
	grid, output
  -STRAIGHT:	Threshold Radius
	floating point number
	Minimum: 0.000010
	Default: 2000.000000
  -VERTICAL:   	Vertical Curvature
	choice
	Available Choices:
	[0] longitudinal curvature
	[1] profile curvature
	Default: 1
  -HORIZONTAL: 	Horizontal Curvature
	choice
	Available Choices:
	[0] cross-sectional curvature
	[1] tangential curvature
	Default: 1
  -SMOOTH:     	Smoothing
	integer number
	Minimum: 0
	Default: 0