rpart.predict {rpart.plot}

Extended version of predict.rpart

Description

Identical to predict.rpart but optionally show the node numbers and rules for the predicted values.

Usage

rpart.predict(object, newdata,
              type = c("vector", "prob", "class", "matrix"),
              na.action = na.pass,
              nn=FALSE, rules=FALSE, ...)

Arguments

object, newdata, type, na.action

Identical to the same arguments for predict.rpart.
If both nn and rules are FALSE, the returned value is identical to predict.rpart.

nn

If TRUE, return a data.frame with the predictions as usual but with an extra column showing the leaf node number for each prediction.

rules

If TRUE, return a data.frame with the predictions as usual but with an extra column showing the rpart rule (as a string) for each prediction.
It may be helpful to use options(width=1000) before printing this data.frame.

...

Passed on to rpart.rules, for example clip.facs=TRUE.

Value

Same as predict.rpart, but with additional information if nn=TRUE and/or rules=TRUE.

See Also

predict.rpart
rpart.rules

Examples

data(ptitanic)
model <- rpart(survived ~ ., data = ptitanic, cp = .02)
head(rpart.predict(model, rules=TRUE))