skbio.diversity.alpha.heip_e¶
- skbio.diversity.alpha.heip_e(counts)[source]¶
Calculate Heip’s evenness measure.
State: Experimental as of 0.4.0.
Heip’s evenness is defined as:
\[\frac{(e^H-1)}{(S-1)}\]where \(H\) is the Shannon-Wiener entropy of counts (using logarithm base \(e\)) and \(S\) is the number of OTUs in the sample.
- Parameters
counts (1-D array_like, int) – Vector of counts.
- Returns
Heip’s evenness measure.
- Return type
double
Notes
The implementation here is based on the description in 1.
References
- 1
Heip, C. 1974. A new index measuring evenness. J. Mar. Biol. Ass. UK., 54, 555-557.