Rechercher une page de manuel
r.li.mpa
Langue: en
Version: 372291 (fedora - 01/12/10)
Section: 1 (Commandes utilisateur)
NAME
r.li.mpa - Calculates mean pixel attribute index on a raster mapKEYWORDS
raster, landscape structure analysis, patch indexSYNOPSIS
r.li.mpar.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:
-
- 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)
- i: attribute
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.leAUTHORS
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.itLast changed: $Date: 2007-02-08 17:52:53 +0100 (Thu, 08 Feb 2007) $
Full index
© 2003-2008 GRASS Development Team
Contenus ©2006-2024 Benjamin Poulain
Design ©2006-2024 Maxime Vantorre