Update method for a xtabs
object
update.xtabs.Rd
Provides an update
method for "xtabs"
objects,
typically by removing terms from the formula to collapse over them.
Usage
# S3 method for class 'xtabs'
update(object, formula., ..., evaluate = TRUE)
Arguments
- object
An existing
"xtabs"
object- formula.
Changes to the formula ? see
update.formula
for details- ...
Additional arguments to the call, or arguments with changed values.
- evaluate
If
TRUE
, evaluate the new call else return the call
See also
update.formula
for details on updates to model formulae
margin.table
does something similar,
collapse.table
collapses category levels