Displays the boundary of each r.le patch and shows how the boundary is traced, displays the attribute, size, perimeter and shape indices for each patch and saves the data in an output file.
raster, landscape structure analysis, patch index
r.le.trace
r.le.trace help
r.le.trace [-pt] map=string [out=string] [--verbose] [--quiet]
Include sampling area boundary as perimeter
Use 4 neighbor tracing instead of 8 neighbor
Verbose module output
Quiet module output
Raster map to be analyzed
Name of output file to store patch data
The r.le.trace module can be used to display the boundary of each r.le patch and show how the boundary is traced, display the attribute, size, perimeter, and shape indices for each patch, and save the data in an output file.
Full instructions can be found in the r.le manual (see "REFERENCES" section below) and the r.le.setup help page.
Baker, W.L. and Y. Cai. 1992. The r.le programs for multiscale analysis of landscape structure using the GRASS geographical information system. Landscape Ecology 7(4):291-302.
The r.le manual: Quantitative analysis of landscape structures (GRASS 5; 2001)
r.le.patch, r.le.pixel, r.le.setup
William L. Baker Department of Geography and Recreation University of Wyoming Laramie, Wyoming 82071 U.S.A.
Last changed: $Date: 2009-02-04 03:03:33 +0100 (Wed, 04 Feb 2009) $
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