# skbio.math.diversity.alpha.simpson_e¶

skbio.math.diversity.alpha.simpson_e(counts)[source]

Calculate Simpson’s evenness measure E.

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. double Simpson’s evenness measure E.