SAGA-GIS Tool Library Documentation (v7.7.0)

Tool Terrain Surface Classification (Iwahashi and Pike)

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


References


Parameters

 NameTypeIdentifierDescriptionConstraints
InputElevationGrid, inputDEM--
Slope (*)Grid, input, optionalSLOPE--
Convexity (*)Grid, input, optionalCONVEXITY--
Texture (*)Grid, 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)IntegerCONV_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 pointCONV_EPSILON-Minimum: 0.000000
Default: 0.000000
Scale (Cells)IntegerTEXT_SCALE-Minimum: 10
Default: 2
Flat Area ThresholdFloating pointTEXT_EPSILONmaximum difference between original and median filtered elevation (3x3 moving window) that still is recognized flatMinimum: 0.000000
Default: 1.000000
(*) optional

Command-line

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