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r.li.pielou: Calculates Pielou's diversity index on a raster map


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


raster, landscape structure analysis, diversity index
r.li.pielou r.li.pielou help r.li.pielou 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
r.li.pielou calculates the "pielou's diversity index" as: with: J: Pielou eveness index H': Shannon index S: number of classes


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 the input raster contains NULL value cells, r.li.pielou returns -1 for these cells. If you want to keep NULL values instead, run subsequently on the resulting map: r.null setnull=-1 map=my_map


To calculate Pielou's diversity index on the map "my_map", using the previously created "my_conf" configuration file (r.li.setup) and saving results in "my_out" raster map, run: r.li.pielou map=my_map conf=my_conf output=my_out


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


r.li, r.li.setup
Luca Delucchi and Duccio Rocchini, Fondazione E. Mach (Italy), based on the r.li.shannon code developed by Serena Pallecchi student of Computer Science University of Pisa (Italy). Last changed: $Date: 2010-11-24 17:49:21 +0100 (Wed, 24 Nov 2010) $ Full index (C) 2003-2010 GRASS Development Team R.LI.PIELOU(1)

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