ggm (version 0.5)

clos: Graph operations

Description

Transforms an edge matrix of a graph.

Usage

clos(M)

Arguments

M

a square matrix with dimnames representing the edge matrix of an undirected graph

Value

• a Boolean matrix of the same dimensions of M.

Details

The function clos is not intended to be used directly from the user. It is used by functions that compute the induced covariance or concentration graphs. The function clos is explained by Cox & Wermuth (2003).

References

Wermuth, N. & Cox, D.R. (2003). Joint response graphs and separation induced by triangular systems. Submitted and available at http://psystat.sowi.uni-mainz.de.

See Also

DAG, inducedCovGraph, inducedConGraph