adjMatrix {ggm}

Adjacency matrix of a graph

Description

Transforms the “edge matrix” of a graph into the adjacency matrix.

Usage

adjMatrix(A)

Arguments

A

a square matrix representing the edge matrix of a graph.

Details

Given the edge matrix A of a graph, this can be transformed into an adjacency matrix E with the formula E = (A-I)^T.

Value

E

the adjacency matrix of the graph.

Author(s)

Giovanni M. Marchetti

See Also

edgematrix

Examples

amat <- DAG(y ~ x+z, z~u+v)
E <- edgematrix(amat)
adjMatrix(E)