Returns a list of parameter vectors for each of the aspects.
getModelLists(theta, par.pos, type = 'diff')(list) a list of different spatial aspects and mean required for the cov.rns functions
(numeric vector) a vector of length p, where p is the number of parameters for
each of the models.
(list) a list detailing in which position of each aspect the elements
of theta should be placed. Expected to be par.pos output of getDesignMatrix.
(character) whether parameters are related to a classical parameterization ('classic') or
a difference parameterization 'diff' . Default set to 'diff'.
Federico Blasi