na.action NA Action
Description
Extract information on the NA action used to create an object.
Usage
na.action(object, ...)
Arguments
object |
any object whose |
... |
further arguments special methods could require. |
Details
na.action is a generic function, and na.action.default its default method. The latter extracts the "na.action" component of a list if present, otherwise the "na.action" attribute.
When model.frame is called, it records any information on NA handling in a "na.action" attribute. Most model-fitting functions return this as a component of their result.
Value
Information from the action which was applied to object if NAs were handled specially, or NULL.
References
Chambers, J. M. and Hastie, T. J. (1992) Statistical Models in S. Wadsworth & Brooks/Cole.
See Also
options("na.action"), na.omit, na.fail, also for na.exclude, na.pass.
Examples
na.action(na.omit(c(1, NA)))
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Licensed under the GNU General Public License.