node,
providing that
node > 0. If
node < 0, the nodes below the specified
node
will be removed from the tree object.
[.tree(x, ..., drop = T) x[node] x[-node]
tree,
snip.tree, or
select.tree.
The subscript number must reference a node number in the tree object.
node (if node > 0);
otherwise the tree object with nodes below
node removed.
This is method for the generic
"[" operator.
The method relies on tree-specific functions
select.tree
and
snip.tree to do the actual work.
These functions can be called directly by users for interactive use.
z.auto <- tree(Mileage ~ Weight, car.test.frame)
z.auto[7]
# Gives the following output:
node), split, n, deviance, yval
* denotes terminal node
7) root 22 61.320 20.41
14) Weight<3637.5 16 32.940 21.06
28) Weight<3322.5 10 16.500 20.50
56) Weight<3197.5 5 11.200 20.60 *
57) Weight>3197.5 5 5.200 20.40 *
29) Weight>3322.5 6 8.000 22.00 *
15) Weight>3637.5 6 3.333 18.67 *