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 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
EXAMPLES
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
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. (PDF)
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).
