Returns the residual degrees-of-freedom extracted from a fitted model object.
df.residual(object, …)an object for which the degrees-of-freedom are desired.
additional optional arguments.
The value of the residual degrees-of-freedom extracted from the object
x.
This is a generic function which can be used to extract residual degrees-of-freedom for fitted models. Consult the individual modeling functions for details on how to use this function.
The default method just extracts the df.residual component.