Names.formula Extract Names from a formula
Description
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 class 'formula'
Names(object, data, exclude, ...)
Arguments
object |
an object inheriting from class |
data |
an optional data frame containing the variables specified in |
exclude |
an optional character vector with names to be excluded from the returned value. Default is |
... |
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.
Author(s)
José Pinheiro and Douglas Bates bates@stat.wisc.edu
See Also
Examples
Names(distance ~ Sex * age, data = Orthodont)
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Licensed under the GNU General Public License.