Whittaker Measure

Whittaker Measure

Usage

index_whittaker(x, ...)

# S4 method for class 'matrix'
index_whittaker(x)

Arguments

x

A \(m \times p\) numeric matrix of count data (absolute frequencies, i.e. a contingency table).

...

Currently not used.

Value

A numeric vector.

Details

This assumes that the order of the matrix rows (from \(1\) to \(n\)) follows the progression along the gradient/transect.

Data are standardized on a presence/absence scale (\(0\)/\(1\)) beforehand.

References

Whittaker, R. H. (1960). Vegetation of the Siskiyou Mountains, Oregon and California. Ecological Monographs, 30(3), 279-338. doi:10.2307/1943563 .

See also

Other beta diversity measures: index_binomial(), index_brainerd(), index_bray(), index_cody(), index_jaccard(), index_morisita(), index_routledge, index_sorensen(), index_wilson()

Author

N. Frerebeau