node operations {bnlearn}

Manipulate nodes in a graph

Description

Add, remove and rename nodes in a graph.

Usage

# add and remove nodes.
add.node(x, node)
remove.node(x, node)

# re-label nodes.
rename.nodes(x, names)
## S4 replacement method for signature 'bn'
nodes(object) <- value
## S4 replacement method for signature 'bn.fit'
nodes(object) <- value

Arguments

x

an object of class bn for add.node() and remove.node(); an object of class bn or bn.fit for rename.nodes().

object

an object of class bn or bn.fit.

node

a character string, the label of a node.

value, names

a vector of character strings, the new set of labels that wll be used as to rename the nodes.

Details

add.node() adds a new (isolated) node to an existing bn object.

remove.node() removes a node from a bn object.

rename.nodes() replaces the node labels with new ones, relabelling the whole node set. The assignment method for nodes() is an alias of rename.nodes().

Value

add.node(), remove.node() and rename.nodes() return an updated bn object.

Author(s)

Marco Scutari

Examples

dag = random.graph(LETTERS[1:5])
add.node(dag, "Z")
remove.node(dag, "A")

nodes(dag)
nodes(dag) = LETTERS[6:10]
nodes(dag)