igraph (version 1.2.7)

permute: Permute the vertices of a graph

Description

Create a new graph, by permuting vertex ids.

Usage

permute(graph, permutation)

Arguments

graph

The input graph, it can directed or undirected.

permutation

A numeric vector giving the permutation to apply. The first element is the new id of vertex 1, etc. Every number between one and vcount(graph) must appear exactly once.

Value

A new graph object.

Details

This function creates a new graph from the input graph by permuting its vertices according to the specified mapping. Call this function with the output of canonical_permutation to create the canonical form of a graph.

permute keeps all graph, vertex and edge attributes of the graph.

See Also

canonical_permutation

Examples

# NOT RUN {
# Random permutation of a random graph
g <- sample_gnm(20, 50)
g2 <- permute(g, sample(vcount(g)))
graph.isomorphic(g, g2)

# Permutation keeps all attributes
g$name <- "Random graph, Gnm, 20, 50"
V(g)$name <- letters[1:vcount(g)]
E(g)$weight <- sample(1:5, ecount(g), replace=TRUE)
g2 <- permute(g, sample(vcount(g)))
graph.isomorphic(g, g2)
g2$name
V(g2)$name
E(g2)$weight
all(sort(E(g2)$weight) == sort(E(g)$weight))
# }