meanvar.rpart
Mean-Variance Plot for an Rpart Object
Description
Creates a plot on the current graphics device of the deviance of the node divided by the number of observations at the node. Also returns the node number.
Usage
meanvar(tree, ...) ## S3 method for class 'rpart' meanvar(tree, xlab = "ave(y)", ylab = "ave(deviance)", ...)
Arguments
tree | fitted model object of class |
xlab | x-axis label for the plot. |
ylab | y-axis label for the plot. |
... | additional graphical parameters may be supplied as arguments to this function. |
Value
an invisible list containing the following vectors is returned.
x | fitted value at terminal nodes ( |
y | deviance of node divided by number of observations at node. |
label | node number. |
Side Effects
a plot is put on the current graphics device.
See Also
Examples
z.auto <- rpart(Mileage ~ Weight, car.test.frame) meanvar(z.auto, log = 'xy')
Copyright (©) 1999–2012 R Foundation for Statistical Computing.
Licensed under the GNU General Public License.