GRASS GIS manual: r.li.richness

NAME

r.li.richness - Calculates dominance's diversity index on a raster map

KEYWORDS

raster, landscape structure analysis, dominance index

SYNOPSIS

r.li.richness
r.li.richness help
r.li.richness 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.richness calculates the "richness's diversity index" as:

with:

m: number of different patch type

EXAMPLES

To calculate richness's diversity index on map my_map, using my_conf configuration file and saving results in my_out file run:

r.li.richness 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.richness returns -1.
If you want to have null values instead run
after index calculation.

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.

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: 2006-11-21 23:36:33 +0100 (Tue, 21 Nov 2006) $

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