NAME

       r.le.patch   -  Calculates  attribute,  patch  size,  core (interior) size, shape, fractal
       dimension, and perimeter measures for sets of patches in a landscape.

KEYWORDS

       raster, landscape structure analysis, patch index

SYNOPSIS

       r.le.patch
       r.le.patch help
       r.le.patch [-cnptu] map=string   [sam=string]    [reg=string]    [att=string[,string,...]]
       [siz=string[,string,...]]     [co1=integer]     [co2=string[,string,...]]     [sh1=string]
       [sh2=string[,string,...]]       [bnd=string[,string,...]]        [per=string[,string,...]]
       [out=string]   [--verbose]  [--quiet]

   Flags:
       -c
           Output map 'interior' with patch cores (specify co1 & co2)

       -n
           Output map 'num' with patch numbers

       -p
           Include sampling area boundary as perimeter

       -t
           Use 4 neighbor instead of 8 neighbor tracing

       -u
           Output maps 'units_x' with sampling units for each scale x

       --verbose
           Verbose module output

       --quiet
           Quiet module output

   Parameters:
       map=string
           Raster map to be analyzed

       sam=string
           Sampling method (choose only 1 method):
                w = whole map     u = units     m = moving window    r = regions
           Default: w

       reg=string
           Name of regions map, only when sam = r; omit otherwise

       att=string[,string,...]
           a1 = mn. pixel att.           a2 = s.d. pixel att.
                a3  =  mn.  patch  att.            a4  =  s.d.  patch  att.     a5  = cover by gp
                   a6 = density by gp   a7 = total density       a8 = eff. mesh number
           Options: a1,a2,a3,a4,a5,a6,a7,a8

       siz=string[,string,...]
           s1 = mn. patch size      s2 = s.d. patch size
                s3 = mn. patch size by gp     s4 = s.d. patch size by gp     s5  =  no.  by  size
           class        s6  =  no.  by size class by gp   s7 = eff. mesh size           s8 = deg.
           landsc. division
           Options: s1,s2,s3,s4,s5,s6,s7,s8

       co1=integer
           Depth-of-edge-influence in pixels (integer) for use with co2

       co2=string[,string,...]
           Core size measures (required if co1 was specified):
                c1 = mn. core size       c2 = s.d. core size c3 = mn. edge size       c4  =  s.d.
           edge  size     c5  =  mn.  core size by gp c6 = s.d. core size by gp     c7 = mn. edge
           size by gp   c8 = s.d. edge size by gp     c9 = no. by size class        c10 = no.  by
           size class by gp
           Options: c1,c2,c3,c4,c5,c6,c7,c8,c9,c10

       sh1=string
           Shape index (choose only 1 index):
                m1 = per./area    m2 = corr. per./area    m3 = rel. circum. circle

       sh2=string[,string,...]
           Shape measures (required if sh1 was specified):
                h1  =  mn.  patch shape          h2 = s.d. patch shape    h3 = mn. patch shape by
           gp    h4 = s.d. patch shape by gp h5 = no. by shape class  h6 = no. by shape class  by
           gp
           Options: h1,h2,h3,h4,h5,h6

       bnd=string[,string,...]
           n1 = mn. twist number           n2 = s.d. twist number
                n3 = mn. omega index            n4 = s.d. omega index
           Options: n1,n2,n3,n4

       per=string[,string,...]
           p1 = sum of perims.      p4 = sum of perims. by gp
                p2  =  mn. per.            p5 = mn. per. by gp p3 = s.d. per.           p6 = s.d.
           per. by gp
           Options: p1,p2,p3,p4,p5,p6

       out=string
           Name of output file for individual patch measures, when sam=w,u,r;
                if out=head, then column headings will be printed

DESCRIPTION

       The r.le.patch module calculates attribute,  patch  size,  core  (interior)  size,  shape,
       fractal dimension, and perimeter measures for sets of patches in a landscape.

NOTES

       Full instructions can be found in the r.le manual (see "REFERENCES" section below) and the
       r.le.setup help page.

REFERENCES

       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)

SEE ALSO

        r.le.pixel, r.le.setup, r.le.trace

AUTHOR

       William L. Baker Department of Geography and Recreation  University  of  Wyoming  Laramie,
       Wyoming 82071 U.S.A.

       Last changed: $Date: 2009-02-03 18:00:13 -0800 (Tue, 03 Feb 2009) $

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       © 2003-2013 GRASS Development Team