has.isolates: Test for loops, isolates and empty hyper-edges.
In HyperG: Hypergraphs in R

Description Usage Arguments Value Author(s) See Also Examples

Tools to determine whether a hypergraph has degenerate elements such as loops (hyper-edges with a single vertex) isolated vertices (ones which appear in no hyper-edges) and empty hyper-edges.

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has.isolates(h)
has.loops(h)
has.empty.hyperedges(h)

`h`	a hypergraph.

returns a logical.

David J. Marchette dmarchette@gmail.com.

remove.isolates, remove.loops, remove.empty.hyperedges. reduce.hypergraph.

   h <- hypergraph_from_edgelist(list(1:3,2:8,9))
	has.loops(h) ## TRUE
	has.isolates(h) ## FALSE
	k <- hypergraph.add.vertices(h,10)
	has.isolates(k) ## TRUE