Tool Vector Ruggedness Measure (VRM)

Vector Ruggedness Measure (VRM)

References

Sappington, J.M., Longshore, K.M., Thompson, D.B. (2007): Quantifying Landscape Ruggedness for Animal Habitat Analysis: A Case Study Using Bighorn Sheep in the Mojave Desert. Journal of Wildlife Management 71(5):1419–1426. online.

Author: O.Conrad (c) 2010
Menu: Terrain Analysis|Morphometry

Parameters

	Name	Type	Identifier	Description	Constraints
Input	Elevation	Grid, input	`DEM`	-	-
Output	Vector Terrain Ruggedness (VRM)	Grid, output	`VRM`	-	-
Options	Grid System	Grid system	`PARAMETERS_GRID_SYSTEM`	-	-
	Search Mode	Choice	`MODE`	-	Available Choices: [0] Square [1] Circle Default: 1
	Search Radius	Integer	`RADIUS`	radius in cells	Minimum: 1 Default: 1
	Weighting Function	Choice	`DW_WEIGHTING`	-	Available Choices: [0] no distance weighting [1] inverse distance to a power [2] exponential [3] gaussian Default: 0
	Power	Floating point	`DW_IDW_POWER`	-	Minimum: 0.000000 Default: 2.000000
	Bandwidth	Floating point	`DW_BANDWIDTH`	Bandwidth for exponential and Gaussian weighting	Minimum: 0.000000 Default: 1.000000

Command-line

Usage: saga_cmd ta_morphometry 17 [-DEM <str>] [-VRM <str>] [-MODE <str>] [-RADIUS <num>] [-DW_WEIGHTING <str>] [-DW_IDW_POWER <double>] [-DW_BANDWIDTH <double>]
  -DEM:<str>            	Elevation
	Grid, input
  -VRM:<str>            	Vector Terrain Ruggedness (VRM)
	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