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r.le.patch
Langue: en
Version: 372350 (fedora - 01/12/10)
Section: 1 (Commandes utilisateur)
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
rasterSYNOPSIS
r.le.patchr.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 gpa7 = 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 gps7 = 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 sizec5 = mn. core size by gpc6 = s.d. core size by gpc7 = mn. edge size by gpc8 = s.d. edge size by gpc9 = no. by size classc10 = 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 gph5 = 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.traceAUTHOR
William L. Baker Department of Geography and Recreation University of Wyoming Laramie, Wyoming 82071 U.S.A.Last changed: $Date: 2006-10-06 05:31:41 +0200 (Fri, 06 Oct 2006) $
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