Estimation of effective sample size (ESS). See Fortin & Dale 2005, p. 223, Equation 5.15 using global Moran's I as 'rho'.

## Arguments

- n
sample size

- rho
Global Moran's I

## Value

numeric; estimated Effective Sample Size

## References

Fortin, M.J. and Dale, M.R.T. (2005) Spatial Analysis: A Guide for Ecologists. Cambridge University Press, Cambridge, 1-30.