NAME

r.le.dist - The r.le.dist program can be used to measure distances between patches and report those distances using several methods.
(GRASS Raster Program)

GRASS VERSION

4.x

SYNOPSIS

r.le.dist
r.le.dist help
r.le.dist [-bntu] map=name [sam=name] [reg=name] [ski=value] [can=value] [di1=name[,name,...]] [di2=name[,name,...]] [out=name]

OPTIONS

Flags:

-b
Run in background
-n
Output map 'num' with patch numbers.
-t
Use 4 neighbor tracing instead of 8 neighbor.
-u
Output maps 'units_x' with sampling units for each scale x.

Parameters:

map
Raster map to be analyzed.
sam
Sampling method (choose only 1 method): w=whole map, u=units, m=moving window, r=regions
Options: w, u, m, r
Default: w
reg
Name of regions map, only when sam = r; omit otherwise.
ski
Skip m boundary cells to speed up nearest neighbor search.
Options: 0-10
Default: 0
can
Use only 'can' candidate patches for faster nearest neighbor search.
Options: 1-30
Default: 30
di1
Distance methods (Choose only 1 method):
Options: m0, m1, m2, m3, m4, m5, m6, m7, m8, m9
(CC=Center-Center, EE=Edge-Edge, CE=Center-Edge):
m0 = each patch to all adjacent neighbors CC
m1 = each patch to all adjacent neighbors CE
m2 = each patch to nearest patch of same gp CC
m3 = each patch to nearest patch of same gp CE
m4 = each patch to nearest patch of same gp EE
m5 = each patch to nearest patch of any diff. gp CC
m6 = each patch to nearest patch of any diff. gp CE
m7 = patches of 1 gp to nearest of specific gp CC
m8 = patches of 1 gp to nearest of specific gp CE
m9 = patches of 1 gp to nearest of specific gp EE
di2
Distance measures:
Options: n1, n2, n3, n4, n5, n6
n1 = mean dist.
n2 = st. dev. dist.
n3 = mean dist. by gp
n4 = st. dev. dist. by gp
n5 = no. of dist. by dist. class
n6 = no. of dist. by dist. class by gp
out
Name of output file for individual patch measures, when sam=w, u, r; if out=head, then column headings will be printed

SEE ALSO

The r.le Programs Users Guide
r.le.null, r.le.patch, r.le.pixel, r.le.rename, r.le.setup, r.le.trace

AUTHOR

William L. Baker, Department of Geography and Recreation, University of Wyoming