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

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