menhinick {abdiv} R Documentation

## Menhinick's richness index

### Description

Menhinick's richness index

### Usage

menhinick(x)


### Arguments

 x A numeric vector of species counts.

### Details

For a vector x of raw species counts, the Menhinick's richness index is \frac{S}{√{N}}, where N is the total number of counts and S is the total number of species observed.

This index is appropriate only for raw counts, not transformed counts or proportions.

Equivalent to menhinick() in skbio.diversity.alpha.

### Value

Menhinick's richness index, R > 0. The index is undefined when the total number of counts is 0, in which case we return NaN.

### Examples

x <- c(15, 6, 4, 0, 3, 0)
menhinick(x)


[Package abdiv version 0.2.0 Index]