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 data frame containing the variables used to fit the model, with
additional attributes (e.g., "terms") used to construct a model
matrix.
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)
Brenton Kenkel and Curtis S. Signorino
model.matrix.polywog for constructing the design
matrix.