| printcp {rpart} | R Documentation |
Displays the cp table for fitted rpart object.
printcp(x, digits=getOption("digits") - 2)
x |
fitted model object of class rpart. This is assumed to be the result
of some function that produces an object with the same named
components as that returned by the rpart function.
|
digits |
the number of digits of numbers to print. |
Prints a table of optimal prunings based on a complexity parameter.
z.auto <- rpart(Mileage ~ Weight, car.test.frame)
printcp(z.auto)
## Not run:
Regression tree:
rpart(formula = Mileage ~ Weight, data = car.test.frame)
Variables actually used in tree construction:
[1] Weight
Root node error: 1354.6/60 = 22.576
CP nsplit rel error xerror xstd
1 0.595349 0 1.00000 1.03436 0.178526
2 0.134528 1 0.40465 0.60508 0.105217
3 0.012828 2 0.27012 0.45153 0.083330
4 0.010000 3 0.25729 0.44826 0.076998
## End(Not run)