ancestors: Ancestors of a node

In oak: Trees Creation and Manipulation

Description

The function ancestors returns the ancestors of a node in a given tree.

Usage

ancestors(.node, .tree, include_node = FALSE)

## S3 method for class 'rtree'
ancestors(.node, .tree, include_node = FALSE)

Arguments

.node	node or character. The node or node label considered.
.tree	A tree.
include_node	logical. If FALSE (the default), .node is not part of the list returned.

Value

A (possibly empty) list of nodes.

Examples

## Rooted tree
(tr0 = c_("Bob", "Carl", "Daniel"))
(tr1 = c_("Bill", "Caroline", "Dimitri", "Enoc"))
(tr2 = r_("Alice", s = list(tr0, tr1)))
ancestors("Alice", tr2)
ancestors("Daniel", tr2, include_node = TRUE)

## Unrooted tree
(tr3 = r_(s = list(tr2, c_("Grand-Mother", "Father", "Son"))))
ancestors("Alice", tr3)
ancestors("Alice", tr3, include_node = TRUE)
ancestors("Daniel", tr3)
ancestors("Son", tr3)
ancestors("Son", tr3, include_node = TRUE)

oak documentation built on May 1, 2019, 9:13 p.m.