terms {stats} | R Documentation |
Model Terms
Description
The function terms
is a generic function
which can be used to extract terms objects
from various kinds of R data objects.
Usage
terms(x, ...)
Arguments
x |
object used to select a method to dispatch. |
... |
further arguments passed to or from other methods. |
Details
There are methods for classes "aovlist"
, "terms"
, and
"formula"
(see terms.formula
):
the default method just extracts the terms
component of the
object, or failing that a "terms"
attribute (as used by
model.frame
).
There are print
and labels
methods for
class "terms"
: the latter extracts the term labels (see
?terms.object
).
Value
An object of class c("terms", "formula")
which contains the
terms representation of a symbolic model. See
?terms.object
for its structure.
References
Chambers, J. M. and Hastie, T. J. (1992) Statistical models. Chapter 2 of Statistical Models in S eds J. M. Chambers and T. J. Hastie, Wadsworth & Brooks/Cole.
See Also
terms.object
, terms.formula
,
lm
, glm
, formula
.