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 *