Module Basic Terrain Analysis
A selection of basic parameters and objects to be derived from a Digital Terrain Model using standard settings.
- Author: O.Conrad (c) 2005
- Specification: grid
- Menu: Terrain Analysis
Parameters
| | Name | Type | Identifier | Description | Constraints |
|---|
| Input | Elevation | Grid (input) | ELEVATION | - | - |
| Output | Analytical Hillshading | Grid (output) | SHADE | - | - |
| Slope | Grid (output) | SLOPE | - | - |
| Aspect | Grid (output) | ASPECT | - | - |
| Plan Curvature | Grid (output) | HCURV | - | - |
| Profile Curvature | Grid (output) | VCURV | - | - |
| Convergence Index | Grid (output) | CONVERGENCE | - | - |
| Closed Depressions | Grid (output) | SINKS | - | - |
| Total Catchment Area | Grid (output) | CAREA | - | - |
| Topographic Wetness Index | Grid (output) | WETNESS | - | - |
| LS-Factor | Grid (output) | LSFACTOR | - | - |
| Channel Network | Shapes (output) | CHANNELS | - | - |
| Drainage Basins | Shapes (output) | BASINS | - | - |
| Channel Network Base Level | Grid (output) | CHNL_BASE | - | - |
| Channel Network Distance | Grid (output) | CHNL_DIST | - | - |
| Valley Depth | Grid (output) | VALL_DEPTH | - | - |
| Relative Slope Position | Grid (output) | RSP | - | - |
| Options | Channel Density | Integer | THRESHOLD | Strahler order to begin a channel. | Minimum: 1
Default: 5 |
Command-line
Usage: saga_cmd ta_compound 0 [-ELEVATION <str>] [-SHADE <str>] [-SLOPE <str>] [-ASPECT <str>] [-HCURV <str>] [-VCURV <str>] [-CONVERGENCE <str>] [-SINKS <str>] [-CAREA <str>] [-WETNESS <str>] [-LSFACTOR <str>] [-CHANNELS <str>] [-BASINS <str>] [-CHNL_BASE <str>] [-CHNL_DIST <str>] [-VALL_DEPTH <str>] [-RSP <str>] [-THRESHOLD <num>]
-ELEVATION:<str> Elevation
Grid (input)
-SHADE:<str> Analytical Hillshading
Grid (output)
-SLOPE:<str> Slope
Grid (output)
-ASPECT:<str> Aspect
Grid (output)
-HCURV:<str> Plan Curvature
Grid (output)
-VCURV:<str> Profile Curvature
Grid (output)
-CONVERGENCE:<str> Convergence Index
Grid (output)
-SINKS:<str> Closed Depressions
Grid (output)
-CAREA:<str> Total Catchment Area
Grid (output)
-WETNESS:<str> Topographic Wetness Index
Grid (output)
-LSFACTOR:<str> LS-Factor
Grid (output)
-CHANNELS:<str> Channel Network
Shapes (output)
-BASINS:<str> Drainage Basins
Shapes (output)
-CHNL_BASE:<str> Channel Network Base Level
Grid (output)
-CHNL_DIST:<str> Channel Network Distance
Grid (output)
-VALL_DEPTH:<str> Valley Depth
Grid (output)
-RSP:<str> Relative Slope Position
Grid (output)
-THRESHOLD:<num> Channel Density
Integer
Minimum: 1
Default: 5