r.le.patch(1)

1r.le.patch(1)                 Grass User's Manual                r.le.patch(1)
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NAME

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

KEYWORDS

11       raster
12

SYNOPSIS

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
21   Flags:
22       -c  Output map 'interior' with patch cores (specify co1 & co2)
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24       -n  Output map 'num' with patch numbers
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26       -p  Include sampling area boundary as perimeter
27
28       -t  Use 4 neighbor instead of 8 neighbor tracing
29
30       -u  Output maps 'units_x' with sampling units for each scale x
31
32   Parameters:
33       map=string
34           Raster map to be analyzed
35
36       sam=string
37           Sampling method (choose only 1 method):
38                w = whole map     u = units      m  =  moving  window     r  =
39           regions Default: w
40
41       reg=string
42           Name of regions map, only when sam = r; omit otherwise
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44       att=string[,string,...]
45           a1 = mn. pixel att.           a2 = s.d. pixel att.
46                a3  =  mn.  patch att.           a4 = s.d. patch att.     a5 =
47           cover by gp       a6 = density by gp  a7 = total density       a8 =
48           eff. mesh number Options: a1,a2,a3,a4,a5,a6,a7,a8
49
50       siz=string[,string,...]
51           s1 = mn. patch size      s2 = s.d. patch size
52                s3 = mn. patch size by gp     s4 = s.d. patch size by gp    s5
53           = no. by size class         s6 = no. by size class by gp  s7 = eff.
54           mesh    size          s8   =   deg.   landsc.   division   Options:
55           s1,s2,s3,s4,s5,s6,s7,s8
56
57       co1=integer
58           Depth-of-edge-influence in pixels (integer) for use with co2
59
60       co2=string[,string,...]
61           Core size measures (required if co1 was specified):
62                c1 = mn. core size       c2 = s.d. core  size c3  =  mn.  edge
63           size       c4 = s.d. edge size   c5 = mn. core size by gp c6 = s.d.
64           core size by gp c7 = mn. edge size by gp c8 =  s.d.  edge  size  by
65           gp     c9  =  no. by size class          c10 = no. by size class by
66           gp Options: c1,c2,c3,c4,c5,c6,c7,c8,c9,c10
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68       sh1=string
69           Shape index (choose only 1 index):
70                m1 = per./area    m2 = corr. per./area    m3  =  rel.  circum.
71           circle
72
73       sh2=string[,string,...]
74           Shape measures (required if sh1 was specified):
75                h1  =  mn.  patch shape          h2 = s.d. patch shape    h3 =
76           mn. patch shape by gp  h4 = s.d. patch shape by gp   h5  =  no.  by
77           shape   class       h6   =  no.  by  shape  class  by  gp  Options:
78           h1,h2,h3,h4,h5,h6
79
80       bnd=string[,string,...]
81           n1 = mn. twist number           n2 = s.d. twist number
82                n3 = mn. omega index            n4 = s.d. omega index Options:
83           n1,n2,n3,n4
84
85       per=string[,string,...]
86           p1 = sum of perims.      p4 = sum of perims. by gp
87                p2  =  mn.  per.            p5  =  mn.  per.  by  gp p3 = s.d.
88           per.           p6 = s.d. per. by gp Options: p1,p2,p3,p4,p5,p6
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90       out=string
91           Name of output file for individual patch measures, when sam=w,u,r;
92                if out=head, then column headings will be printed
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DESCRIPTION

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

100       Full instructions can be found in the  r.le  manual  (see  "REFERENCES"
101       section below) and the r.le.setup help page.
102

REFERENCES

104       Baker, W.L. and Y. Cai. 1992. The r.le programs for multiscale analysis
105       of landscape structure using the GRASS geographical information system.
106       Landscape Ecology 7(4):291-302.
107
108       The  r.le  manual: Quantitative analysis of landscape structures (GRASS
109       5; 2001)
110

AUTHOR

115       William L. Baker Department of Geography and Recreation  University  of
116       Wyoming Laramie, Wyoming 82071 U.S.A.
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118       Last changed: $Date: 2006/10/06 03:35:41 $
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120       Full index
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124GRASS 6.2.2                                                      r.le.patch(1)