A loopy graph has at least one loop edge: an edge from a vertex to itself.
is_loopy(graph)
Logical scalar.
The input graph.
Other multigraphs: is_multigraph, is_simple, remove_loops, remove_multiple, simplify
is_multigraph
is_simple
remove_loops
remove_multiple
simplify
G <- graph(list(A = c("A", "B", "B"), B = c("A", "C"), C = "A")) is_loopy(G) G2 <- simplify(G) is_loopy(G2)
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