RPopitz: Extremal t process
In RandomFields: Simulation and Analysis of Random Fields

RPopitz defines an extremal t process.

1	RPopitz(phi, xi, mu, s, alpha)

`phi`	an `RMmodel`; covariance model for a standardized Gaussian random field, or the field itself.
`xi,mu,s`	the extreme value index, the location parameter and the scale parameter, respectively, of the generalized extreme value distribution. See Details.
`alpha`	originally referred to the α-Frechet marginal distribution, see the original literature for details.

\GEV

Davison, A.C., Padoan, S., Ribatet, M. (2012). Statistical modelling of spatial extremes. Stat. Science 27, 161-186.
Opitz, T. (2012) A spectral construction of the extremal t process. arxiv 1207.2296.