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make_chordal_ring creates an extended chordal ring.
An extended chordal ring is regular graph, each node has the same
degree. It can be obtained from a simple ring by adding some extra
edges specified by a matrix. Let p denote the number of columns in
the ‘W’ matrix. The extra edges of vertex i
are added according to column i mod p in
‘W’. The number of extra edges is the number
of rows in ‘W’: for each row j an edge
i->i+w[ij] is added if i+w[ij] is less than the number
of total nodes. See also Kotsis, G: Interconnection Topologies for
Parallel Processing Systems, PARS Mitteilungen 11, 1-6, 1993.
make_chordal_ring(n, w)chordal_ring(...)
The number of vertices.
A matrix which specifies the extended chordal ring. See details below.
Passed to make_chordal_ring.
An igraph graph.
Other determimistic constructors: graph_from_atlas,
graph_from_edgelist,
graph_from_literal,
make_empty_graph,
make_full_citation_graph,
make_full_graph, make_graph,
make_lattice, make_ring,
make_star, make_tree
# NOT RUN {
chord <- make_chordal_ring(15,
matrix(c(3, 12, 4, 7, 8, 11), nr = 2))
# }
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