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This is the command r.li.pielougrass that can be run in the OnWorks free hosting provider using one of our multiple free online workstations such as Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator

PROGRAM:

NAME


r.li.pielou - Calculates Pielou’s diversity index on a raster map

KEYWORDS


raster, landscape structure analysis, diversity index

SYNOPSIS


r.li.pielou
r.li.pielou --help
r.li.pielou input=name config=name output=name [--overwrite] [--help] [--verbose]
[--quiet] [--ui]

Flags:
--overwrite
Allow output files to overwrite existing files

--help
Print usage summary

--verbose
Verbose module output

--quiet
Quiet module output

--ui
Force launching GUI dialog

Parameters:
input=name [required]
Name of input raster map

config=name [required]
Configuration file

output=name [required]
Name for output raster map

DESCRIPTION


r.li.pielou calculates the "Pielou’s diversity index" as:
with:

· J: Pielou eveness index

· H’: Shannon index

· S: number of classes

NOTES


Do not use absolute path names for the config and output file/map parameters. If the
"moving window" method was selected in g.gui.rlisetup, then the output will be a raster
map, otherwise an ASCII file will be generated in the folder
C:\Users\userxy\AppData\Roaming\GRASS7\r.li\output\ (MS-Windows) or
$HOME/.grass7/r.li/output/ (GNU/Linux).

If the input raster contains NULL value cells, r.li.pielou returns NULL for these cells.

EXAMPLES


To calculate Pielou’s diversity index on map my_map, using my_conf configuration file
(previously defined with g.gui.rlisetup) and saving results in my_out, run:
r.li.pielou input=my_map conf=my_conf output=my_out

Forest map (Spearfish sample dataset) example:
g.region raster=landcover.30m -p
r.mapcalc "forests = if(landcover.30m >= 41 && landcover.30m <= 43,1,null())"
r.li.pielou input=forests conf=movwindow7 out=forests_pielou_mov7
r.univar forests_pielou_mov7

Forest map (North Carolina sample dataset) example:
g.region raster=landclass96 -p
r.mapcalc "forests = if(landclass96 == 5, 1, null() )"
r.li.pielou input=forests conf=movwindow7 out=forests_pielou_mov7
# verify
r.univar forests_pielou_mov7
r.to.vect input=forests output=forests type=area
d.mon wx0
d.rast forests_pielou_mov7
d.vect forests type=boundary

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