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