Calculate the fitted values of the sample selection model using robust fit.
# S3 method for heckitrob
fitted(object, ...)object of class "heckitrob" or object of class "heckit5rob"
currently not used
vector of fitted values or a list that contains two vectors of fitted values
In case of truncated selection model one vector of fitted values is returned. In case of switching regression model a list, that contains two vectors corresponding to two regimes, is returned.