add.arc {dagR}

Add an arc to a DAG.

Description

Conveniently add an arc to an existing DAG.

Usage

add.arc(dag, arc, type = 0)

Arguments

dag

The DAG to which an arc should be added.

arc

A vector of length 2, indicating from which node (first element) to which node (second element) the arc is to go. Note: the node numbering follows the numbering of the existing DAG (as shown in dag.draw with option numbering=T), not the numbering of dag.init.

type

0 (=default) for a directed arc, 1 for an undirected association.

Value

A DAG with the arc (and corresponding arc.type) added, and with the path-related variables (paths, pathsN, path.status, searchType, searchRes) removed.

Author(s)

Lutz P Breitling <[e-mail]>

See Also

rm.arc, add.node, rm.node