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rasterdiv (version 0.2-5)

ShannonP: Parallelised Shannon's diversity index

Description

Parallelised Shannon's diversity index.

Usage

ShannonP(rasterm, w, na.tolerance, debugging)

Arguments

rasterm

input data.

w

half of the side of the square moving window.

na.tolerance

a numeric value \((0.0-1.0)\) which indicates the proportion of NA values that will be tolerated to calculate Rao's index in each moving window over x. If the relative proportion of NA's in a moving window is bigger than na.tolerance, then the value of the window will be set as NA, otherwise Rao's index will be calculated considering the non-NA values. Default values is 0.0 (i.e., no tolerance for NA's).

debugging

a boolean variable set to FALSE by default. If TRUE, additional messages will be printed. For de-bugging only.

Value

Matrix or a list of matrixes with the Shannon index computed through moving window of the given size.

See Also

Shannon