skbio.diversity.alpha.
mcintosh_d
(counts)[source]¶Calculate McIntosh dominance index D.
State: Experimental as of 0.4.0.
McIntosh dominance index D is defined as:
where \(N\) is the total number of individuals in the sample and \(U\) is defined as:
where \(n_i\) is the number of individuals in the \(i^{\text{th}}\) OTU.
Parameters: | counts (1-D array_like, int) – Vector of counts. |
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Returns: | McIntosh dominance index D. |
Return type: | double |
See also
Notes
The index was proposed in [1]. The implementation here is based on the description given in the SDR-IV online manual [2].
References
[1] | McIntosh, R. P. 1967 An index of diversity and the relation of certain concepts to diversity. Ecology 48, 1115-1126. |
[2] | http://www.pisces-conservation.com/sdrhelp/index.html |