Tool Fuzzy Landform Element Classification
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.
- Author: O.Conrad (c) 2013
- Menu: Terrain Analysis|Terrain Classification
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 | - | |
(*) optional |
Command-line
Usage: saga_cmd ta_morphometry 25 [-ELEVATION <str>] [-SLOPE <str>] [-MINCURV <str>] [-MAXCURV <str>] [-PCURV <str>] [-TCURV <str>] [-FORM <str>] [-MEM <str>] [-ENTROPY <str>] [-CI <str>] [-PLAIN <str>] [-PIT <str>] [-PEAK <str>] [-RIDGE <str>] [-CHANNEL <str>] [-SADDLE <str>] [-BSLOPE <str>] [-FSLOPE <str>] [-SSLOPE <str>] [-HOLLOW <str>] [-FHOLLOW <str>] [-SHOLLOW <str>] [-SPUR <str>] [-FSPUR <str>] [-SSPUR <str>] [-INPUT <str>] [-MEMBERSHIP <str>] [-SLOPETODEG <str>] [-T_SLOPE_MIN <double>] [-T_SLOPE_MAX <double>] [-T_CURVE_MIN <double>] [-T_CURVE_MAX <double>] -ELEVATION:<str> Elevation Grid, input -SLOPE:<str> Slope Grid, input -MINCURV:<str> Minimum Curvature Grid, input -MAXCURV:<str> Maximum Curvature Grid, input -PCURV:<str> Profile Curvature Grid, input -TCURV:<str> Tangential Curvature Grid, input -FORM:<str> Landform Grid, output -MEM:<str> Maximum Membership Grid, output, optional -ENTROPY:<str> Entropy Grid, output, optional -CI:<str> Confusion Index Grid, output, optional -PLAIN:<str> Plain Grid, output, optional -PIT:<str> Pit Grid, output, optional -PEAK:<str> Peak Grid, output, optional -RIDGE:<str> Ridge Grid, output, optional -CHANNEL:<str> Channel Grid, output, optional -SADDLE:<str> Saddle Grid, output, optional -BSLOPE:<str> Back Slope Grid, output, optional -FSLOPE:<str> Foot Slope Grid, output, optional -SSLOPE:<str> Shoulder Slope Grid, output, optional -HOLLOW:<str> Hollow Grid, output, optional -FHOLLOW:<str> Foot Hollow Grid, output, optional -SHOLLOW:<str> Shoulder Hollow Grid, output, optional -SPUR:<str> Spur Grid, output, optional -FSPUR:<str> Foot Spur Grid, output, optional -SSPUR:<str> Shoulder Spur Grid, output, optional -INPUT:<str> Input Choice Available Choices: [0] elevation [1] slope and curvatures Default: 0 -MEMBERSHIP:<str> Memberships Boolean Default: 0 -SLOPETODEG:<str> Slope Grid Units Choice Available Choices: [0] degree [1] radians Default: 0 -T_SLOPE_MIN:<double> Slope Thresholds [Degree] Value range -T_SLOPE_MAX:<double> Slope Thresholds [Degree] Value range -T_CURVE_MIN:<double> Curvature Thresholds [1000 / m] Value range -T_CURVE_MAX:<double> Curvature Thresholds [1000 / m] Value range