This method function returns the names of the terms corresponding to
the right hand side of object (treated as a linear formula),
obtained as the column names of the corresponding
model.matrix.
Usage
# S3 method for formula
Names(object, data, exclude, …)
an optional data frame containing the variables specified
in object. By default the variables are taken from the
environment from which Names.formula is called.
exclude
an optional character vector with names to be excluded
from the returned value. Default is c("pi",".").
…
some methods for this generic require additional
arguments. None are used in this method.
Value
a character vector with the column names of the model.matrix
corresponding to the right hand side of object which are not
listed in excluded.