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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 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:

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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