Negative log likelihood of the generalized extreme value distribution (quantile/mean of N-block maxima parametrization)
gevN.ll(par, dat, N, q = 0.5, qty = c("mean", "quantile"))vector of loc, quantile/mean of N-block maximum and shape
sample vector
probability, corresponding to \(q\)th quantile of the N-block maximum
string indicating whether to calculate the q quantile or the mean
gevN