ОПИСАНИЕ

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)

ПРИМЕРЫ

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

ПРИМЕЧАНИЯ

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.

СМ. ТАКЖЕ

r.li r.le

АВТОРЫ

Serena Pallecchi student of Computer Science University of Pisa (Italy).
Commission from Faunalia Pontedera (PI), Italy (www.faunalia.it)

ИЗВЕСТНЫЕ ОШИБКИ

Please send bugs reports to pallecch@cli.di.unipi.it