SAGA-GIS Tool Library Documentation (v7.8.2)

Tool Terrain Ruggedness Index (TRI)

Terrain Ruggedness Index (TRI)


References


Parameters

 NameTypeIdentifierDescriptionConstraints
InputElevationGrid, inputDEM--
OutputTerrain Ruggedness Index (TRI)Grid, outputTRI--
OptionsGrid SystemGrid systemPARAMETERS_GRID_SYSTEM--
Search ModeChoiceMODE-Available Choices:
[0] Square
[1] Circle
Default: 1
Search RadiusIntegerRADIUSradius in cellsMinimum: 1
Default: 1
Weighting FunctionChoiceDW_WEIGHTING-Available Choices:
[0] no distance weighting
[1] inverse distance to a power
[2] exponential
[3] gaussian
Default: 0
PowerFloating pointDW_IDW_POWER-Minimum: 0.000000
Default: 2.000000
BandwidthFloating pointDW_BANDWIDTHBandwidth for exponential and Gaussian weightingMinimum: 0.000000
Default: 1.000000

Command-line

Usage: saga_cmd ta_morphometry 16 [-DEM <str>] [-TRI <str>] [-MODE <str>] [-RADIUS <num>] [-DW_WEIGHTING <str>] [-DW_IDW_POWER <double>] [-DW_BANDWIDTH <double>]
  -DEM:<str>            	Elevation
	Grid, input
  -TRI:<str>            	Terrain Ruggedness Index (TRI)
	Grid, output
  -MODE:<str>           	Search Mode
	Choice
	Available Choices:
	[0] Square
	[1] Circle
	Default: 1
  -RADIUS:<num>         	Search Radius
	Integer
	Minimum: 1
	Default: 1
  -DW_WEIGHTING:<str>   	Weighting Function
	Choice
	Available Choices:
	[0] no distance weighting
	[1] inverse distance to a power
	[2] exponential
	[3] gaussian
	Default: 0
  -DW_IDW_POWER:<double>	Power
	Floating point
	Minimum: 0.000000
	Default: 2.000000
  -DW_BANDWIDTH:<double>	Bandwidth
	Floating point
	Minimum: 0.000000
	Default: 1.000000