Extracts the model frame from a fitted polywog
model, as
model.frame.lm
does for a fitted lm
model.
# S3 method for polywog
model.frame(formula, ...)
a fitted model of class "polywog"
(the argument is
named formula
for consistency with the generic function
model.frame
)
other arguments, currently ignored (but may later be adapted
for use as in model.frame.lm
)
A data frame containing the variables used to fit the model, with
additional attributes (e.g., "terms"
) used to construct a model
matrix.
model.matrix.polywog
for constructing the design
matrix.