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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 input=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:
- input=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 input=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)
BUGS
Please send bugs reports to
pallecch@cli.di.unipi.it
Last changed: $Date: 2010-04-08 01:24:34 -0700 (Thu, 08 Apr 2010) $
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