1r.le.patch(1) Grass User's Manual r.le.patch(1)
2
6 r.le.patch - Calculates attribute, patch size, core (interior) size,
7 shape, fractal dimension, and perimeter measures for sets of patches in
8 a landscape.
9
11 raster
12
14 r.le.patch
15 r.le.patch help
16 r.le.patch [-cnptu] map=string [sam=string] [reg=string]
17 [att=string[,string,...]] [siz=string[,string,...]] [co1=integer]
18 [co2=string[,string,...]] [sh1=string] [sh2=string[,string,...]]
19 [bnd=string[,string,...]] [per=string[,string,...]] [out=string]
20 [--verbose] [--quiet]
21 Flags:
23 -c
24 Output map 'interior' with patch cores (specify co1 & co2)
25 -n
27 Output map 'num' with patch numbers
28 -p
30 Include sampling area boundary as perimeter
31 -t
33 Use 4 neighbor instead of 8 neighbor tracing
34 -u
36 Output maps 'units_x' with sampling units for each scale x
37 --verbose
39 Verbose module output
40 --quiet
42 Quiet module output
43 Parameters:
45 map=string
46 Raster map to be analyzed
47 sam=string
49 Sampling method (choose only 1 method):
50 w = whole map u = units m = moving window r =
51 regions
52 Default: w
53 reg=string
55 Name of regions map, only when sam = r; omit otherwise
56 att=string[,string,...]
58 a1 = mn. pixel att. a2 = s.d. pixel att.
59 a3 = mn. patch att. a4 = s.d. patch att. a5 =
60 cover by gp a6 = density by gp a7 = total density a8 =
61 eff. mesh number
62 Options: a1,a2,a3,a4,a5,a6,a7,a8
63 siz=string[,string,...]
65 s1 = mn. patch size s2 = s.d. patch size
66 s3 = mn. patch size by gp s4 = s.d. patch size by gp s5
67 = no. by size class s6 = no. by size class by gp s7 = eff.
68 mesh size s8 = deg. landsc. division
69 Options: s1,s2,s3,s4,s5,s6,s7,s8
70 co1=integer
72 Depth-of-edge-influence in pixels (integer) for use with co2
73 co2=string[,string,...]
75 Core size measures (required if co1 was specified):
76 c1 = mn. core size c2 = s.d. core size c3 = mn. edge
77 size c4 = s.d. edge size c5 = mn. core size by gp c6 = s.d.
78 core size by gp c7 = mn. edge size by gp c8 = s.d. edge size by
79 gp c9 = no. by size class c10 = no. by size class by
80 gp
81 Options: c1,c2,c3,c4,c5,c6,c7,c8,c9,c10
82 sh1=string
84 Shape index (choose only 1 index):
85 m1 = per./area m2 = corr. per./area m3 = rel. circum.
86 circle
87 sh2=string[,string,...]
89 Shape measures (required if sh1 was specified):
90 h1 = mn. patch shape h2 = s.d. patch shape h3 =
91 mn. patch shape by gp h4 = s.d. patch shape by gp h5 = no. by
92 shape class h6 = no. by shape class by gp
93 Options: h1,h2,h3,h4,h5,h6
94 bnd=string[,string,...]
96 n1 = mn. twist number n2 = s.d. twist number
97 n3 = mn. omega index n4 = s.d. omega index
98 Options: n1,n2,n3,n4
99 per=string[,string,...]
101 p1 = sum of perims. p4 = sum of perims. by gp
102 p2 = mn. per. p5 = mn. per. by gp p3 = s.d.
103 per. p6 = s.d. per. by gp
104 Options: p1,p2,p3,p4,p5,p6
105 out=string
107 Name of output file for individual patch measures, when sam=w,u,r;
108 if out=head, then column headings will be printed
109
111 The r.le.patch module calculates attribute, patch size, core (interior)
112 size, shape, fractal dimension, and perimeter measures for sets of
113 patches in a landscape.
114
116 Full instructions can be found in the r.le manual (see "REFERENCES"
117 section below) and the r.le.setup help page.
118
120 Baker, W.L. and Y. Cai. 1992. The r.le programs for multiscale analysis
121 of landscape structure using the GRASS geographical information system.
122 Landscape Ecology 7(4):291-302.
123 The r.le manual: Quantitative analysis of landscape structures (GRASS
125 5; 2001)
126
128 r.le.pixel, r.le.setup, r.le.trace
129
131 William L. Baker Department of Geography and Recreation University of
132 Wyoming Laramie, Wyoming 82071 U.S.A.
133 Last changed: $Date: 2006-10-06 05:31:41 +0200 (Fri, 06 Oct 2006) $
135 Full index
137 © 2003-2008 GRASS Development Team
139GRASS 6.3.0 r.le.patch(1)