Number of Leaves

Extracts the number of leaves of an rpart object.

get_leaves(tree)

Arguments

tree

An rpart object.

Value

The number of leaves.

See also

subtree node_membership leaf_membership

Author

Riccardo Di Francesco

Examples

## Generate data.
set.seed(1986)

n <- 3000
k <- 3

X <- matrix(rnorm(n * k), ncol = k)
colnames(X) <- paste0("x", seq_len(k))

Y <- exp(X[, 1]) + 2 * X[, 2] * X[, 2] > 0 + rnorm(n)

## Construct tree.
library(rpart)
tree <- rpart(Y ~ ., data = data.frame(Y, X))

## Extract number of leaves.
n_leaves <- get_leaves(tree)
n_leaves
#> [1] 8