get_cmty_l_eigenvec {DiagrammeR}

Get community membership by leading eigenvector

Description

Through the calculation of the leading non-negative eigenvector of the modularity matrix of the graph, obtain the group membership values for each of the nodes in the graph.

Usage

get_cmty_l_eigenvec(graph)

Arguments

graph

A graph object of class dgr_graph.

Value

A data frame with group membership assignments for each of the nodes.

Examples

# Create a random graph using the
# `add_gnm_graph()` function
graph <-
  create_graph(
    directed = FALSE) %>%
  add_gnm_graph(
    n = 10,
    m = 15,
    set_seed = 23)

# Get the group membership
# values for all nodes in the
# graph through calculation of
# the leading non-negative
# eigenvector of the modularity
# matrix of the graph
graph %>%
  get_cmty_l_eigenvec()

# Add the group membership
# values to the graph as a node
# attribute
graph <-
  graph %>%
  join_node_attrs(
    df = get_cmty_l_eigenvec(.))

# Display the graph's node data frame
graph %>% get_node_df()