Tool Curvature Classification
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.
- Author: O.Conrad (c) 2001
- Menu: Terrain Analysis|Terrain Classification
- WIKI: http://sourceforge.net/apps/trac/saga-gis/wiki/ta_morphometry_4
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 | 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 | 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 <str>] [-CLASSES <str>] [-STRAIGHT <double>] [-VERTICAL <str>] [-HORIZONTAL <str>] [-SMOOTH <num>] -DEM:<str> Elevation Grid, input -CLASSES:<str> Curvature Classification Grid, output -STRAIGHT:<double> Threshold Radius Floating point Minimum: 0.000010 Default: 2000.000000 -VERTICAL:<str> Vertical Curvature Choice Available Choices: [0] longitudinal curvature [1] profile curvature Default: 1 -HORIZONTAL:<str> Horizontal Curvature Choice Available Choices: [0] cross-sectional curvature [1] tangential curvature Default: 1 -SMOOTH:<num> Smoothing Integer Minimum: 0 Default: 0