skbio.diversity.alpha.
mcintosh_e
(counts)[source]¶Calculate McIntosh’s evenness measure E.
State: Experimental as of 0.4.0.
McIntosh evenness measure E is defined as:
where \(n_i\) is the number of individuals in the \(i^{\text{th}}\) OTU, \(N\) is the total number of individuals, and \(S\) is the number of OTUs in the sample.
Parameters: | counts (1-D array_like, int) – Vector of counts. |
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Returns: | McIntosh evenness measure E. |
Return type: | double |
See also
Notes
The implementation here is based on the description given in [1], NOT the one in the SDR-IV online manual, which is wrong.
References
[1] | Heip & Engels (1974) Comparing Species Diversity and Evenness Indices. p 560. |