Fuzzy Landform Element Classification
- Author: O.Conrad (c) 2013
- Menu: Terrain Analysis | Terrain Classification
Description
Algorithm for derivation of form elements according to slope, maximum curvature, minimum curvature, profile curvature, tangential curvature, based on a linear semantic import model for slope and curvature and a fuzzy classification Based on the AML script 'felementf' by Jochen Schmidt, Landcare Research.
References
- Schmidt, J. & Hewitt, A. (2004): Fuzzy land element classification from DTMs based on geometry and terrain position. Geoderma, 121(3-4), 243-256. CiteSeerX.
Parameters
Name | Type | Identifier | Description | Constraints | |
---|---|---|---|---|---|
Input | Elevation | grid, input | ELEVATION | - | - |
Slope | grid, input | SLOPE | - | - | |
Minimum Curvature | grid, input | MINCURV | - | - | |
Maximum Curvature | grid, input | MAXCURV | - | - | |
Profile Curvature | grid, input | PCURV | - | - | |
Tangential Curvature | grid, input | TCURV | - | - | |
Output | Landform | grid, output | FORM | - | - |
Maximum Membership | grid, output, optional | MEM | - | - | |
Entropy | grid, output, optional | ENTROPY | - | - | |
Confusion Index | grid, output, optional | CI | - | - | |
Plain | grid, output, optional | PLAIN | - | - | |
Pit | grid, output, optional | PIT | - | - | |
Peak | grid, output, optional | PEAK | - | - | |
Ridge | grid, output, optional | RIDGE | - | - | |
Channel | grid, output, optional | CHANNEL | - | - | |
Saddle | grid, output, optional | SADDLE | - | - | |
Back Slope | grid, output, optional | BSLOPE | - | - | |
Foot Slope | grid, output, optional | FSLOPE | - | - | |
Shoulder Slope | grid, output, optional | SSLOPE | - | - | |
Hollow | grid, output, optional | HOLLOW | - | - | |
Foot Hollow | grid, output, optional | FHOLLOW | - | - | |
Shoulder Hollow | grid, output, optional | SHOLLOW | - | - | |
Spur | grid, output, optional | SPUR | - | - | |
Foot Spur | grid, output, optional | FSPUR | - | - | |
Shoulder Spur | grid, output, optional | SSPUR | - | - | |
Options | Grid System | grid system | PARAMETERS_GRID_SYSTEM | - | - |
Input | choice | INPUT | if elevation is selected, slopes and curvatures will be calculated internally | Available Choices: [0] elevation [1] slope and curvatures Default: 0 | |
Memberships | boolean | MEMBERSHIP | - | Default: 0 | |
Slope Grid Units | choice | SLOPETODEG | - | Available Choices: [0] degree [1] radians Default: 0 | |
Slope Thresholds [Degree] | value range | T_SLOPE | lower and upper thresholds for semantic import model, planar vs. sloped areas | - | |
Curvature Thresholds [1000 / m] | value range | T_CURVE | lower and upper thresholds for semantic import model, straight vs. curved areas | - |
Command Line
Usage: saga_cmd ta_morphometry 25 [-ELEVATION] [-SLOPE ] [-MINCURV ] [-MAXCURV ] [-PCURV ] [-TCURV ] [-FORM ] [-MEM ] [-ENTROPY ] [-CI ] [-PLAIN ] [-PIT ] [-PEAK ] [-RIDGE ] [-CHANNEL ] [-SADDLE ] [-BSLOPE ] [-FSLOPE ] [-SSLOPE ] [-HOLLOW ] [-FHOLLOW ] [-SHOLLOW ] [-SPUR ] [-FSPUR ] [-SSPUR ] [-INPUT ] [-MEMBERSHIP ] [-SLOPETODEG ] [-T_SLOPE_MIN ] [-T_SLOPE_MAX ] [-T_CURVE_MIN ] [-T_CURVE_MAX ] -ELEVATION: Elevation grid, input -SLOPE: Slope grid, input -MINCURV: Minimum Curvature grid, input -MAXCURV: Maximum Curvature grid, input -PCURV: Profile Curvature grid, input -TCURV: Tangential Curvature grid, input -FORM: Landform grid, output -MEM: Maximum Membership grid, output, optional -ENTROPY: Entropy grid, output, optional -CI: Confusion Index grid, output, optional -PLAIN: Plain grid, output, optional -PIT: Pit grid, output, optional -PEAK: Peak grid, output, optional -RIDGE: Ridge grid, output, optional -CHANNEL: Channel grid, output, optional -SADDLE: Saddle grid, output, optional -BSLOPE: Back Slope grid, output, optional -FSLOPE: Foot Slope grid, output, optional -SSLOPE: Shoulder Slope grid, output, optional -HOLLOW: Hollow grid, output, optional -FHOLLOW: Foot Hollow grid, output, optional -SHOLLOW: Shoulder Hollow grid, output, optional -SPUR: Spur grid, output, optional -FSPUR: Foot Spur grid, output, optional -SSPUR: Shoulder Spur grid, output, optional -INPUT: Input choice Available Choices: [0] elevation [1] slope and curvatures Default: 0 -MEMBERSHIP: Memberships boolean Default: 0 -SLOPETODEG: Slope Grid Units choice Available Choices: [0] degree [1] radians Default: 0 -T_SLOPE_MIN: Slope Thresholds [Degree] value range -T_SLOPE_MAX: Slope Thresholds [Degree] value range -T_CURVE_MIN: Curvature Thresholds [1000 / m] value range -T_CURVE_MAX: Curvature Thresholds [1000 / m] value range