Examples for 'rpart::rsq.rpart'


Plots the Approximate R-Square for the Different Splits

Aliases: rsq.rpart

Keywords: tree

### ** Examples

z.auto <- rpart(Mileage ~ Weight, car.test.frame)
rsq.rpart(z.auto)
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

n= 60 

        CP nsplit rel error  xerror     xstd
1 0.595349      0   1.00000 1.03344 0.177558
2 0.134528      1   0.40465 0.49136 0.073366
3 0.012828      2   0.27012 0.33687 0.056192
4 0.010000      3   0.25729 0.34339 0.055894
plot of chunk example-rpart-rsq.rpart-1
plot of chunk example-rpart-rsq.rpart-1

[Package rpart version 4.1.19 Index]