make_chordal_ring: Create an extended chordal ring graph

In igraph: Network Analysis and Visualization

Create an extended chordal ring graph

Description

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.

Usage

make_chordal_ring(n, w, directed = FALSE)

chordal_ring(...)

Arguments

n	The number of vertices.
w	A matrix which specifies the extended chordal ring. See details below.
directed	Logical scalar, whether or not to create a directed graph.
...	Passed to make_chordal_ring().

Value

An igraph graph.

See Also

Other deterministic constructors: graph_from_atlas(), graph_from_edgelist(), graph_from_literal(), make_(), make_empty_graph(), make_full_citation_graph(), make_full_graph(), make_graph(), make_lattice(), make_ring(), make_star(), make_tree()

Examples

chord <- make_chordal_ring(
  15,
  matrix(c(3, 12, 4, 7, 8, 11), nr = 2)
)

igraph documentation built on Oct. 20, 2024, 1:06 a.m.