R: Adjacency matrix of a graph

adjMatrix {ggm} | R Documentation

## 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)

[Package ggm version 2.3 Index]