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. doi:10.1016/j.geoderma.2003.10.008.

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