add.node {dagR}

Add a node to an existing DAG.

Description

Conveniently adds a node to an existing DAG, inserting its coordinates and label before the outcome node. Also updates the arcs correspondingly.

Usage

add.node(dag, name = "unknown", type = 1, x = NA, y = NA)

Arguments

dag

The DAG to which the node is to be added.

name

Label for the node (defaults to "unknown").

type

Type of node (1=covariable, 2=unknown); defaults to 1.

x

X coordinate for the node position.

y

Y coordinate for the node position.

Details

If no x and y coordinates are provided, the function places the node in an arbitrary position, slightly different with each additional node, so that one can more easily replace the nodes afterwards using dag.move.

Value

A DAG with the new node added.

Author(s)

Lutz P Breitling <[e-mail]>

See Also

rm.node, add.arc, rm.arc