r.li.padcv(1)

NAME
r.li.padcv

DESCRIPTION
r.li.padcv (patch area distribution coefficient of variation) calculates as:
with:

        SD: standard deviation of patch area size

        MPS: mean patch area size

        ai: area of patch i

        Npatch: number of patch

REFERENCES
McGarigal, K., and B. J. Marks. 1995. FRAGSTATS: spatial pattern analysis program for quantifying landscape structure. USDA For. Serv. Gen. Tech. Rep. PNW-351.

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.padcv 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 not full of null values r.li.padcv returns a value >=0 that is PADcv.
If input raster is full of null values r.li.padcv returns -1.
If you want to have null values instead run
r.null setnull=-1 map=my_map
after index calculation.

SEE ALSO
r.li

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: 2007-02-08 17:52:53 +0100 (Thu, 08 Feb 2007) $

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