An R package for spatial extreme modelling

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Max-stable processes

Conditional max-stable simulations

Latent Variable

Copula approaches

Miscellaneous

References

Reference Manual

What is a max-linear model?

A unit Frechet max-linear process is defined by

where are independent unit Frechet random variables and are non-negative deterministic functions such that


Any unit Frechet max-stable process can be arbitrarly well approximated by a max-linear model by taking sufficiently large and suitable functions .

Function "condrmaxstab": Performs conditional simulations for max-stable processes

Since the functions are deterministics, Wang and Stoev [2011] proposed an efficient algorithm to generate conditional simulations from a max-linear model and thus approximate conditional simulations from a max-stable process.
However this approach has some drawbacks since it is not clear how to find appropriate functions . Therefore the only available model is currently the (discretized) Smith model for which

where is the zero mean (multivariate) normal density with covariance matrix , are appropriately chosen points in and is a constant ensuring unit Frechet margins.