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Encode network data as 'digraph6' symbols

Source: R/as_digraph6.R
as_digraph6.Rd

Generic function encoding directed networks as 'digraph6' symbol(s). See below for available methods.

Usage

as_digraph6(object)

# S3 method for matrix
as_digraph6(object)

# S3 method for igraph
as_digraph6(object)

# S3 method for network
as_digraph6(object)

# S3 method for list
as_digraph6(object)

# S3 method for default
as_digraph6(object)

Arguments

object

a matrix, an igraph object or a network object or a list thereof. See Methods section below.

Value

A character vector of 'digraph6' symbols.

Details

The 'digraph6' format is designed for directed graphs. Error is thrown in case it is given an undirected network.

Methods (by class)

  • as_digraph6(matrix): Expects object to be a square matrix which is interpreted as an adjacency matrix of a directed graph.

  • as_digraph6(igraph): Igraph object needs to be a directed graph. Requires igraph package.

  • as_digraph6(network): Network object needs to be directed network. Requires network package.

  • as_digraph6(list): If object is a list the function is applied to each element. Consequently, it can be a list with a mixture of supported objects classes (adjacency matrices, igraph, or network objects).

  • as_digraph6(default): Throws an error about the unhandled class.

Examples

# From adjacency matrix ----------------------------------------------------
am <- matrix(c(
  0,1,0,
  0,0,1,
  1,0,0),
  byrow=TRUE, ncol=3, nrow=3)
as_digraph6(am)
#> [1] "&BP_"

# From igraph objects ------------------------------------------------------
if(requireNamespace("igraph", quietly=TRUE)) {
  g <- igraph::graph_from_adjacency_matrix(am)
  as_digraph6(g)
}
#> [1] "&BP_"

# From network objects -----------------------------------------------------
if(requireNamespace("network", quietly=TRUE)) {
  net <- network::network(am)
  as_digraph6(net)
}
#> [1] "&BP_"