This function returns the log-likelihood of the non-homogeneous Poisson process
of exceedances above threshold u, adjusted so that there are np periods
of observations.
     
    
    Usage
    pp.ll(par, dat, u, np = 1)
 
    
    Arguments
- par
- vector of - loc,- scaleand- shape
 
- dat
- sample vector 
- u
- threshold 
- np
- number of periods of observations. This is a post hoc adjustment for the intensity so that the parameters of the model coincide with those of a generalized extreme value distribution with block size - length(dat)/np.
 
 
    
    Value
    log-likelihood of the NHPP