SAGA 9.4.2 | Tool Library Documentation

Terrain Surface Classification (Iwahashi and Pike)


Description

Terrain surface classification as proposed by Iwahashi & Pike (2007).


References


Parameters

 NameTypeIdentifierDescriptionConstraints
InputElevationgrid, inputDEM--
Slopegrid, input, optionalSLOPE--
Convexitygrid, input, optionalCONVEXITY--
Texturegrid, input, optionalTEXTURE--
OutputLandformsgrid, outputLANDFORMS--
OptionsGrid Systemgrid systemPARAMETERS_GRID_SYSTEM--
RecalculatebooleanCONV_RECALC-Default: 0
RecalculatebooleanTEXT_RECALC-Default: 0
Number of ClasseschoiceTYPE-Available Choices: [0] 8 [1] 12 [2] 16 Default: 2
Scale (Cells)integer numberCONV_SCALE-Minimum: 1 Default: 10
Laplacian Filter KernelchoiceCONV_KERNEL-Available Choices: [0] four-neighbourhood [1] eight-neihbourhood [2] eight-neihbourhood (distance based weighting) Default: 0
TypechoiceCONV_TYPE-Available Choices: [0] convexity [1] concavity Default: 0
Flat Area Thresholdfloating point numberCONV_EPSILON-Minimum: 0.000000 Default: 0.000000
Scale (Cells)integer numberTEXT_SCALE-Minimum: 10 Default: 2
Flat Area Thresholdfloating point numberTEXT_EPSILONmaximum difference between original and median filtered elevation (3x3 moving window) that still is recognized flatMinimum: 0.000000 Default: 1.000000

Command Line


Usage: saga_cmd ta_morphometry 22 [-DEM ] [-SLOPE ] [-CONVEXITY ] [-CONV_RECALC ] [-TEXTURE ] [-TEXT_RECALC ] [-LANDFORMS ] [-TYPE ] [-CONV_SCALE ] [-CONV_KERNEL ] [-CONV_TYPE ] [-CONV_EPSILON ] [-TEXT_SCALE ] [-TEXT_EPSILON ]
  -DEM:            	Elevation
	grid, input
  -SLOPE:          	Slope
	grid, input, optional
  -CONVEXITY:      	Convexity
	grid, input, optional
  -CONV_RECALC:    	Recalculate
	boolean
	Default: 0
  -TEXTURE:        	Texture
	grid, input, optional
  -TEXT_RECALC:    	Recalculate
	boolean
	Default: 0
  -LANDFORMS:      	Landforms
	grid, output
  -TYPE:           	Number of Classes
	choice
	Available Choices:
	[0] 8
	[1] 12
	[2] 16
	Default: 2
  -CONV_SCALE:     	Scale (Cells)
	integer number
	Minimum: 1
	Default: 10
  -CONV_KERNEL:    	Laplacian Filter Kernel
	choice
	Available Choices:
	[0] four-neighbourhood
	[1] eight-neihbourhood
	[2] eight-neihbourhood (distance based weighting)
	Default: 0
  -CONV_TYPE:      	Type
	choice
	Available Choices:
	[0] convexity
	[1] concavity
	Default: 0
  -CONV_EPSILON:	Flat Area Threshold
	floating point number
	Minimum: 0.000000
	Default: 0.000000
  -TEXT_SCALE:     	Scale (Cells)
	integer number
	Minimum: 10
	Default: 2
  -TEXT_EPSILON:	Flat Area Threshold
	floating point number
	Minimum: 0.000000
	Default: 1.000000