DiagrammeR (version 1.0.9)

from_adj_matrix: Create a graph using an adjacency matrix

Description

Using an adjacency matrix object, generate a graph of class dgr_graph.

Usage

from_adj_matrix(
  x,
  mode = "undirected",
  weighted = FALSE,
  use_diag = TRUE,
  graph_name = NULL,
  write_backups = FALSE,
  display_msgs = FALSE
)

Value

A graph object of class dgr_graph.

Arguments

x

A square matrix object serving as the adjacency matrix.

mode

The method in which to interpret the input adjacency matrix. Options include: undirected, directed, upper, lower, max, min, and plus.

weighted

Whether to create a weighted graph from the adjacency matrix.

use_diag

Whether to use the diagonal of the adjacency matrix in calculations. If TRUE then the diagonal values will be included as is. If FALSE then the diagonal values will be replaced with zero values before inclusion in any calculations.

graph_name

An optional string for labeling the graph object.

write_backups

An option to write incremental backups of changing graph states to disk. If TRUE, a subdirectory within the working directory will be created and used to store RDS files. The default value is FALSE so one has to opt in to use this functionality.

display_msgs

An option to display messages primarily concerned with changes in graph selections. By default, this is FALSE.

Examples

# Create an adjacency matrix
adj_matrix <-
  sample(
    0:1, 100,
    replace = TRUE,
    prob = c(0.9,0.1)
  ) %>%
  matrix(ncol = 10)

# Create a graph from the adjacency matrix
graph <- from_adj_matrix(adj_matrix)