Tool Terrain Ruggedness Index (TRI)
Terrain Ruggedness Index (TRI)
References
- Riley, S.J., De Gloria, S.D., Elliot, R. (1999): A Terrain Ruggedness that Quantifies Topographic Heterogeneity. Intermountain Journal of Science, Vol.5, No.1-4, pp.23-27. online.
- Author: O.Conrad (c) 2010
- Menu: Terrain Analysis|Morphometry
Parameters
Name | Type | Identifier | Description | Constraints | |
---|---|---|---|---|---|
Input | Elevation | Grid (input) | DEM | - | - |
Output | Terrain Ruggedness Index (TRI) | Grid (output) | TRI | - | - |
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 16 [-DEM <str>] [-TRI <str>] [-MODE <str>] [-RADIUS <num>] [-DW_WEIGHTING <str>] [-DW_IDW_POWER <double>] [-DW_BANDWIDTH <double>] -DEM:<str> Elevation Grid (input) -TRI:<str> Terrain Ruggedness Index (TRI) 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