
NAME
r.li.mpa - Calculates mean pixel attribute index on a raster map
KEYWORDS
raster, landscape structure analysis, patch index
SYNOPSIS
r.li.mpa
r.li.mpa help
r.li.mpa map=name conf=string output=name [--overwrite] [--verbose] [--quiet]
Flags:
- --overwrite
- Allow output files to overwrite existing files
- --verbose
- Verbose module output
- --quiet
- Quiet module output
Parameters:
- map=name
- Name of input raster map
- conf=string
- Configuration file
- output=name
- Name for output raster map
DESCRIPTION
r.li.mpa
(mean pixel attribute) calculates the average value of the attribute of all the non-null
cells in the sampling area as:
with:
- i: attribute
- m: number of non-null attributes in the sampling area
- wi: number of cells of attribute i
- size: size of sampling area (in cells)
EXAMPLES
To calculate mean pixel attribute index on map my_map, using
my_conf configuration file and saving results in
my_out file run:
r.li.mpa map=my_map conf=my_conf output=my_out
NOTES
Do not use absolute path names for output files. They are raster if
moving window disposition was selected, otherwise they are in
~/.r.li/output folder.
If input raster is full of null values r.li.mpa consider to
have 0 patch.
If area is 0 r.li.mpa returns -1; it is possible only if the
raster is masked
If you want to have null values instead run
r.null setnull=-1 map=my_map
after index calculation.
SEE ALSO
r.li
r.le
AUTHORS
Serena Pallecchi student of Computer Science University of Pisa (Italy).
Commission from Faunalia Pontedera (PI), Italy (www.faunalia.it)
Last changed: $Date: 2011-08-16 02:13:05 -0700 (Tue, 16 Aug 2011) $
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