R: Estimate the Shannon Index

estShannon {MCPAN} | R Documentation

## Estimate the Shannon Index

### Description

Calculates estimates of the Shannon-Wiener from count data.

### Usage

    estShannon(x, Nspec = NULL)

### Arguments

`x` | a integer(numeric) vector of species counts
`Nspec` | a single integer value, fixing the number of species to a certain value

### Value

A list, containing the elements:

`estimate` | a single numeric value, the estimate with bias correction according to Fritsch and Hsu (1999)
`estraw` | a single numeric value, the raw estimate
`varest` | a single numeric value, the variance estimate according to Fritsch and Hsu (1999)

### References

Fritsch, KS, and Hsu, JC (1999): Multiple Comparison of Entropies with Application to Dinosaur Biodiversity. Biometrics 55, 1300-1305.

### See Also

estSimpsonf for estimating Shannon indices pooled over several samples, grouped by a factor

[Package MCPAN version 1.1-21 Index]