Tool Geomorphons
This tool derives so called geomorphons, which represent categories of terrain forms, from a digital elevation model using a machine vision approach.
References
- Jasiewicz, J. / Stepinski, T.F. (2013): . Geomorphology, 182, 147-156. ScienceDirect.
- Stepinski, T.F. / Jasiewicz, J. (2011): . In: Hengl, T. / Evans, I.S. / Wilson, J.P. / Gould, M. [Eds.]: Proceedings of Geomorphometry 2011, Redlands, 109-112. pdf at geomorphometry.org.
- Author: O.Conrad (c) 2019
- Menu: Terrain Analysis|Terrain Classification
Parameters
| | Name | Type | Identifier | Description | Constraints |
|---|
| Input | Elevation | Grid (input) | DEM | - | - |
| Output | Geomorphons | Grid (output) | GEOMORPHONS | - | - |
| Options | Grid system | Grid system | PARAMETERS_GRID_SYSTEM | - | - |
| Threshold Angle | Floating point | THRESHOLD | Flatness threshold angle (degrees). | Minimum: 0.000000
Default: 1.000000 |
| Radial Limit | Floating point | RADIUS | - | Minimum: 0.000000
Default: 10000.000000 |
| Method | Choice | METHOD | - | Available Choices:
[0] multi scale
[1] line tracing
Default: 1 |
| Multi Scale Factor | Floating point | DLEVEL | - | Minimum: 1.250000
Default: 3.000000 |
Command-line
Usage: saga_cmd ta_lighting 8 [-DEM <str>] [-GEOMORPHONS <str>] [-THRESHOLD <double>] [-RADIUS <double>] [-METHOD <str>] [-DLEVEL <double>]
-DEM:<str> Elevation
Grid (input)
-GEOMORPHONS:<str> Geomorphons
Grid (output)
-THRESHOLD:<double> Threshold Angle
Floating point
Minimum: 0.000000
Default: 1.000000
-RADIUS:<double> Radial Limit
Floating point
Minimum: 0.000000
Default: 10000.000000
-METHOD:<str> Method
Choice
Available Choices:
[0] multi scale
[1] line tracing
Default: 1
-DLEVEL:<double> Multi Scale Factor
Floating point
Minimum: 1.250000
Default: 3.000000