skbio.diversity.alpha.simpson_e¶
- skbio.diversity.alpha.simpson_e(counts)[source]¶
Calculate Simpson’s evenness measure E.
State: Experimental as of 0.4.0.
Simpson’s E is defined as
\[E=\frac{1 / D}{S_{obs}}\]where \(D\) is dominance and \(S_{obs}\) is the number of observed OTUs.
- Parameters
counts (1-D array_like, int) – Vector of counts.
- Returns
Simpson’s evenness measure E.
- Return type
double
Notes
The implementation here is based on the description given in 1.
References