complementer: Complementer of a graph

In igraph: Network Analysis and Visualization

Complementer of a graph

Description

A complementer graph contains all edges that were not present in the input graph.

Usage

complementer(graph, loops = FALSE)

Arguments

graph	The input graph, can be directed or undirected.
loops	Logical constant, whether to generate loop edges.

Details

complementer() creates the complementer of a graph. Only edges which are not present in the original graph will be included in the new graph.

complementer() keeps graph and vertex attriubutes, edge attributes are lost.

Value

A new graph object.

Author(s)

Gabor Csardi [e-mail]

See Also

Other functions for manipulating graph structure: +.igraph(), add_edges(), add_vertices(), compose(), connect(), contract(), delete_edges(), delete_vertices(), difference.igraph(), difference(), disjoint_union(), edge(), igraph-minus, intersection.igraph(), intersection(), path(), permute(), rep.igraph(), reverse_edges(), simplify(), union.igraph(), union(), vertex()

Examples

## Complementer of a ring
g <- make_ring(10)
complementer(g)

## A graph and its complementer give together the full graph
g <- make_ring(10)
gc <- complementer(g)
gu <- union(g, gc)
gu
graph.isomorphic(gu, make_full_graph(vcount(g)))

igraph documentation built on Aug. 10, 2023, 9:08 a.m.