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<title>GRASS GIS manual: r.le.patch</title>
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<h2>NAME</h2>
<em><b>r.le.patch</b></em> - Calculates attribute, patch size, core (interior) size, shape, fractal dimension, and perimeter measures for sets of patches in a landscape.
<h2>KEYWORDS</h2>
raster, landscape structure analysis, patch index
<h2>SYNOPSIS</h2>
<b>r.le.patch</b><br>
<b>r.le.patch help</b><br>
<b>r.le.patch</b> [-<b>cnptu</b>] <b>map</b>=<em>string</em> [<b>sam</b>=<em>string</em>] [<b>reg</b>=<em>string</em>] [<b>att</b>=<em>string</em>[,<i>string</i>,...]] [<b>siz</b>=<em>string</em>[,<i>string</i>,...]] [<b>co1</b>=<em>integer</em>] [<b>co2</b>=<em>string</em>[,<i>string</i>,...]] [<b>sh1</b>=<em>string</em>] [<b>sh2</b>=<em>string</em>[,<i>string</i>,...]] [<b>bnd</b>=<em>string</em>[,<i>string</i>,...]] [<b>per</b>=<em>string</em>[,<i>string</i>,...]] [<b>out</b>=<em>string</em>] [--<b>verbose</b>] [--<b>quiet</b>]
<h3>Flags:</h3>
<DL>
<DT><b>-c</b></DT>
<DD>Output map 'interior' with patch cores (specify co1 & co2)</DD>
<DT><b>-n</b></DT>
<DD>Output map 'num' with patch numbers</DD>
<DT><b>-p</b></DT>
<DD>Include sampling area boundary as perimeter</DD>
<DT><b>-t</b></DT>
<DD>Use 4 neighbor instead of 8 neighbor tracing</DD>
<DT><b>-u</b></DT>
<DD>Output maps 'units_x' with sampling units for each scale x </DD>
<DT><b>--verbose</b></DT>
<DD>Verbose module output</DD>
<DT><b>--quiet</b></DT>
<DD>Quiet module output</DD>
</DL>
<h3>Parameters:</h3>
<DL>
<DT><b>map</b>=<em>string</em></DT>
<DD>Raster map to be analyzed</DD>
<DT><b>sam</b>=<em>string</em></DT>
<DD>Sampling method (choose only 1 method): <br> w = whole map u = units m = moving window r = regions</DD>
<DD>Default: <em>w</em></DD>
<DT><b>reg</b>=<em>string</em></DT>
<DD>Name of regions map, only when sam = r; omit otherwise</DD>
<DT><b>att</b>=<em>string[,<i>string</i>,...]</em></DT>
<DD>a1 = mn. pixel att. a2 = s.d. pixel att.<br> a3 = mn. patch att. a4 = s.d. patch att.<br> a5 = cover by gp a6 = density by gp<br> a7 = total density a8 = eff. mesh number</DD>
<DD>Options: <em>a1,a2,a3,a4,a5,a6,a7,a8</em></DD>
<DT><b>siz</b>=<em>string[,<i>string</i>,...]</em></DT>
<DD>s1 = mn. patch size s2 = s.d. patch size<br> s3 = mn. patch size by gp s4 = s.d. patch size by gp <br> s5 = no. by size class s6 = no. by size class by gp<br> s7 = eff. mesh size s8 = deg. landsc. division</DD>
<DD>Options: <em>s1,s2,s3,s4,s5,s6,s7,s8</em></DD>
<DT><b>co1</b>=<em>integer</em></DT>
<DD>Depth-of-edge-influence in pixels (integer) for use with co2</DD>
<DT><b>co2</b>=<em>string[,<i>string</i>,...]</em></DT>
<DD>Core size measures (required if co1 was specified):<br> c1 = mn. core size c2 = s.d. core size<br> c3 = mn. edge size c4 = s.d. edge size<br> c5 = mn. core size by gp c6 = s.d. core size by gp<br> c7 = mn. edge size by gp c8 = s.d. edge size by gp<br> c9 = no. by size class c10 = no. by size class by gp</DD>
<DD>Options: <em>c1,c2,c3,c4,c5,c6,c7,c8,c9,c10</em></DD>
<DT><b>sh1</b>=<em>string</em></DT>
<DD>Shape index (choose only 1 index):<br> m1 = per./area m2 = corr. per./area m3 = rel. circum. circle</DD>
<DT><b>sh2</b>=<em>string[,<i>string</i>,...]</em></DT>
<DD>Shape measures (required if sh1 was specified):<br> h1 = mn. patch shape h2 = s.d. patch shape<br> h3 = mn. patch shape by gp h4 = s.d. patch shape by gp<br> h5 = no. by shape class h6 = no. by shape class by gp</DD>
<DD>Options: <em>h1,h2,h3,h4,h5,h6</em></DD>
<DT><b>bnd</b>=<em>string[,<i>string</i>,...]</em></DT>
<DD>n1 = mn. twist number n2 = s.d. twist number<br> n3 = mn. omega index n4 = s.d. omega index</DD>
<DD>Options: <em>n1,n2,n3,n4</em></DD>
<DT><b>per</b>=<em>string[,<i>string</i>,...]</em></DT>
<DD>p1 = sum of perims. p4 = sum of perims. by gp<br> p2 = mn. per. p5 = mn. per. by gp<br> p3 = s.d. per. p6 = s.d. per. by gp</DD>
<DD>Options: <em>p1,p2,p3,p4,p5,p6</em></DD>
<DT><b>out</b>=<em>string</em></DT>
<DD>Name of output file for individual patch measures, when sam=w,u,r;<br> if out=head, then column headings will be printed</DD>
</DL>
<h2>DESCRIPTION</h2>
The <em>r.le.patch</em> module calculates attribute, patch size, core
(interior) size, shape, fractal dimension, and perimeter measures for sets
of patches in a landscape.
<h2>NOTES</h2>
Full instructions can be found in the <b>r.le manual</b> (see "REFERENCES"
section below) and the <em><a href="r.le.setup.html">r.le.setup</a></em>
help page.
<h2>REFERENCES</h2>
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.
<p>
The <A href="http://grass.osgeo.org/gdp/landscape/r_le_manual5.pdf"><i>r.le</i>
manual: Quantitative analysis of landscape structures</a> (GRASS 5; 2001)
<h2>SEE ALSO</h2>
<em>
<!-- <a href="r.le.dist.html">r.le.dist</a>,
<a href="r.le.null.html">r.le.null</a>, -->
<a href="r.le.pixel.html">r.le.pixel</a>,
<!-- <a href="r.le.rename.html">r.le.rename</a>, -->
<a href="r.le.setup.html">r.le.setup</a>,
<a href="r.le.trace.html">r.le.trace</a></em>
<h2>AUTHOR</h2>
William L. Baker Department of Geography and Recreation University of
Wyoming Laramie, Wyoming 82071 U.S.A.
<p>
<i>Last changed: $Date: 2009-02-03 18:00:13 -0800 (Tue, 03 Feb 2009) $</i>
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<P>© 2003-2013 <a href="http://grass.osgeo.org">GRASS Development Team</a></p>
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