man r.le.patch () -

NAME

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]

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

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

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

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.

r.le GRASS 5 (2001): Quantitative analysis of landscape structures

SEE ALSO

r.le.dist, r.le.null, r.le.pixel, r.le.rename, 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: 2003/05/06 13:53:52 $

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