Homepage > Man Pages > Category > General Commands
Homepage > Man Pages > Name > R

r.li.padcv

man page of r.li.padcv

r.li.padcv: Calculates coefficient of variation of patch area on a raster map

NAME

r.li.padcv - Calculates coefficient of variation of patch area on a raster map

KEYWORDS

raster, landscape structure analysis, patch index
SYNOPSIS
r.li.padcv r.li.padcv help r.li.padcv 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.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) $ Full index (C) 2003-2010 GRASS Development Team R.LI.PADCV(1)
 
 
 

Copyright © 2011–2018 by topics-of-interest.com . All rights reserved. Hosted by all-inkl.
Contact · Imprint · Privacy

Page generated in 22.66ms.

Ermitteln Sie Ihre IP-Adresse schnell und einfach | brauchbar.de | generiere.de