skbio.diversity.alpha.mcintosh_d

skbio.diversity.alpha.mcintosh_d(counts)

Calculate McIntosh dominance index.

McIntosh dominance index \(D\) is defined as:

\[D = \frac{N - U}{N - \sqrt{N}}\]

where \(N\) is the total number of individuals in the sample and \(U\) is defined as:

\[U = \sqrt{\sum{{n_i}^2}}\]

where \(n_i\) is the number of individuals in the \(i^{\text{th}}\) taxon.

Parameters:

counts1-D array_like, int

Vector of counts.

Returns:

float

McIntosh dominance index.

See also

mcintosh_e

Notes

McIntosh dominance index was originally described in [1].

References

[1]

McIntosh, R. P. 1967 An index of diversity and the relation of certain concepts to diversity. Ecology 48, 1115-1126.