Traverse

the root of a tree or a sub-tree that should be traversed

node

any of 'pre-order' (the default), 'post-order', 'in-order', 'level', or 'ancestor'

traversal

allows providing a a prune criteria, i.e. a function taking a <code>Node</code> as an input, and returning <code>TRUE</code> or <code>FALSE</code>.
If the pruneFun returns FALSE for a Node, then the Node and all its sub-tree will not be considered.

pruneFun

allows providing a a filter, i.e. a function taking a <code>Node</code> as an input, and returning <code>TRUE</code> or <code>FALSE</code>.
Note that if filter returns <code>FALSE</code>, then the node will be excluded from the result (but not the entire subtree).

filterFun

Create tree structures from hierarchical data, and use the utility
methods to traverse the tree in various orders. Aggregate, cumulate, print, convert to and from data.frame,
and apply functions to your tree data. Useful for decision trees, machine learning, finance, conversion
from and to JSON, and many other applications.

Traverse: Traverse a tree or a sub-tree

Description

Usage

Arguments

Value