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
Last changed: $Date$