k_hetang {MLpreemption}

Preemption parameter estimation by He and Tang

Description

Calculates the He-Tang estimator for the geometric series.

Usage

k_hetang(x)

Arguments

x

A vector of counts

Value

a real number

Note

Zero counts are discarded prior to calculation of the estimator.

Author(s)

Jan Graffelman ([e-mail])

References

He, F. and Tang, D. 2008. Estimating the niche preemption parameter of the geometric series. Acta Oecologica, 33:105–107

See Also

k_ls,k_ml,k_may

Examples

data("Ganeshaiah")
x <- Ganeshaiah[,2]
k_hetang(x)