Create union of multiple graphs
graph_union(graph_list)
List of graphs
graph union
dag <- create_random_DAG(30, 0.2)
dag2 <- create_random_DAG(30, 0.2)
graph_union(list(g1=dag,g2=dag2))
#> A graphNEL graph with directed edges
#> Number of Nodes = 30
#> Number of Edges = 109