Menhinick's richness index
Menhinick's richness index
menhinick(x)
x |
A numeric vector of species counts. |
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.
Menhinick's richness index, R > 0. The index is undefined when
the total number of counts is 0, in which case we return NaN.
x <- c(15, 6, 4, 0, 3, 0) menhinick(x)
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