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