Tool Vector Ruggedness Measure (VRM)
Vector Ruggedness Measure (VRM)
References
- Sappington, J.M., Longshore, K.M., Thompson, D.B. (2007): Quantifying Landscape Ruggedness for Animal Habitat Analysis: A Case Study Using Bighorn Sheep in the Mojave Desert. Journal of Wildlife Management 71(5):1419–1426. online.
- Author: O.Conrad (c) 2010
- Menu: Terrain Analysis|Morphometry
Parameters
| | Name | Type | Identifier | Description | Constraints |
|---|
| Input | Elevation | Grid, input | DEM | - | - |
| Output | Vector Terrain Ruggedness (VRM) | Grid, output | VRM | - | - |
| Options | Grid System | Grid system | PARAMETERS_GRID_SYSTEM | - | - |
| Search Mode | Choice | MODE | - | Available Choices:
[0] Square
[1] Circle
Default: 1 |
| Search Radius | Integer | RADIUS | radius in cells | Minimum: 1
Default: 1 |
| Weighting Function | Choice | DW_WEIGHTING | - | Available Choices:
[0] no distance weighting
[1] inverse distance to a power
[2] exponential
[3] gaussian
Default: 0 |
| Power | Floating point | DW_IDW_POWER | - | Minimum: 0.000000
Default: 2.000000 |
| Bandwidth | Floating point | DW_BANDWIDTH | Bandwidth for exponential and Gaussian weighting | Minimum: 0.000000
Default: 1.000000 |
Command-line
Usage: saga_cmd ta_morphometry 17 [-DEM <str>] [-VRM <str>] [-MODE <str>] [-RADIUS <num>] [-DW_WEIGHTING <str>] [-DW_IDW_POWER <double>] [-DW_BANDWIDTH <double>]
-DEM:<str> Elevation
Grid, input
-VRM:<str> Vector Terrain Ruggedness (VRM)
Grid, output
-MODE:<str> Search Mode
Choice
Available Choices:
[0] Square
[1] Circle
Default: 1
-RADIUS:<num> Search Radius
Integer
Minimum: 1
Default: 1
-DW_WEIGHTING:<str> Weighting Function
Choice
Available Choices:
[0] no distance weighting
[1] inverse distance to a power
[2] exponential
[3] gaussian
Default: 0
-DW_IDW_POWER:<double> Power
Floating point
Minimum: 0.000000
Default: 2.000000
-DW_BANDWIDTH:<double> Bandwidth
Floating point
Minimum: 0.000000
Default: 1.000000