allEdges {ggm} | R Documentation |
All edges of a graph
Description
Finds the set of edges of a graph. That is the set of undirected edges if the graph is undirected and the set of arrows if the graph is directed.
Usage
allEdges(amat)
Arguments
amat |
a square Boolean matrix, with dimnames, the adjacency matrix of a graph. |
Value
a matrix with two columns. Each row of the matrix is a pair of
indices indicating an edge of the graph. If the graph is undirected,
then only one of the pairs is reported.
Author(s)
Giovanni M. Marchetti
See Also
Examples
## A UG graph
allEdges(UG(~ y*v*k +v*k*d+y*d))
## A DAG
allEdges(DAG(u~h+o+p, h~o, o~p))
[Package ggm version 2.5.1 Index]