r.vector.ruggedness - GRASS GIS manual

NAME

r.vector.ruggedness - Vector Ruggedness Measure

KEYWORDS

SYNOPSIS

r.vector.ruggedness

r.vector.ruggedness --help

r.vector.ruggedness [-p] elevation=name[,name,...] [size=integer] output=name[,name,...] [--overwrite] [--help] [--verbose] [--quiet] [--ui]

Flags:

-p: Do not run in parallel
--overwrite: Allow output files to overwrite existing files
--help: Print usage summary
--verbose: Verbose module output
--quiet: Quiet module output
--ui: Force launching GUI dialog

Parameters:

elevation=name[,name,...] [required]: DEM Raster Input; Name of input raster map(s)
size=integer: Size of neighbourhood; Default: 3
output=name[,name,...] [required]: Vector Ruggedness Index Output; Name for output raster map(s)

DESCRIPTION
NOTES
EXAMPLE
REFERENCES
AUTHOR

DESCRIPTION

r.vector.ruggedness represents a measurement of terrain ruggedness based on the methodology conceived by Sappington et al. (2007). The measure is calculated by decomposing slope and aspect into 3-dimensional vectors, and calculating the resultant vector magnitude within a user-specified moving window size, using r.neighbors. The user can specify neighborhood size to measure ruggedness across larger landscale scales. Neighborhood operations are performed using a rectangular window shape.

NOTES

This script was adapted from the original Sappington et al. (2007) script.

EXAMPLE

r.vector.ruggedness elevation=srtm wsize=5 output=vrm

REFERENCES

Sappington, J.M., K.M. Longshore, and D.B. Thomson. 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.

AUTHOR

Steven Pawley

SOURCE CODE

Available at: r.vector.ruggedness source code (history)