This model was introduced in Ballani and Schlather (2011).
.rwexpbsspec(n, d, alpha, beta)
a matrix of samples from the angular distribution
an n
by d
sample from the spectral distribution
sample size
vector of concentration parameters
vector of Dirichlet components
Leo Belzile
Ballani, D. and M. Schlather (2011). A construction principle for multivariate extreme value distributions, Biometrika, 98(3), 633--645.