Examples for 'rpart::path.rpart'


Follow Paths to Selected Nodes of an Rpart Object

Aliases: path.rpart

Keywords: tree

### ** Examples

fit <- rpart(Kyphosis ~ Age + Number + Start, data = kyphosis)
print(fit)
n= 81 

node), split, n, loss, yval, (yprob)
      * denotes terminal node

 1) root 81 17 absent (0.79012346 0.20987654)  
   2) Start>=8.5 62  6 absent (0.90322581 0.09677419)  
     4) Start>=14.5 29  0 absent (1.00000000 0.00000000) *
     5) Start< 14.5 33  6 absent (0.81818182 0.18181818)  
      10) Age< 55 12  0 absent (1.00000000 0.00000000) *
      11) Age>=55 21  6 absent (0.71428571 0.28571429)  
        22) Age>=111 14  2 absent (0.85714286 0.14285714) *
        23) Age< 111 7  3 present (0.42857143 0.57142857) *
   3) Start< 8.5 19  8 present (0.42105263 0.57894737) *
path.rpart(fit, nodes = c(11, 22))
 node number: 11 
   root
   Start>=8.5
   Start< 14.5
   Age>=55

 node number: 22 
   root
   Start>=8.5
   Start< 14.5
   Age>=55
   Age>=111

[Package rpart version 4.1.19 Index]