S3 object describing a graph with the following fields:
numeric(2)]Lower bounds for node coordinates in the Euclidean plane.
numeric(2)]Upper bounds for node coordinates in the Euclidean plane.
integer(1)]Number of clusters.
integer(1)]Number of nodes.
integer(1)]Number of edges.
integer(1)]Number of weights associated with each edge.
character]Character vector describing the node generators used to create nodes.
character]Character vector describing the node generators used to create edges.
character]Character vector describing the node generators used to create weights.
list of matrix]List of weight/distance/cost matrizes.
integer]Integer vector of node degrees.
integer | NULL]Integer vector which stores the cluster membership of each node. Not NULL only if graph is clustered.
matrix(n.nodes, 2)]Matrix of node coordinates. Each row contains the node coordinates of one node.