fitted is a generic function which extracts fitted values from
objects returned by modeling functions.
fitted.values is an
alias for it.
All object classes which are returned by model fitting functions
should provide a
fitted method. (Note that the generic is
fitted and not
fitted(object, …) fitted.values(object, …)
an object for which the extraction of model fitted values is meaningful.
Fitted values extracted from the object
Chambers, J. M. and Hastie, T. J. (1992) Statistical Models in S. Wadsworth & Brooks/Cole.