DiagrammeR (version 0.9.2)

get_cmty_louvain: Get community membership by Louvain optimization

Description

Through the use of multi-level optimization of a modularity score, obtain the group membership values for each of the nodes in the graph.

Usage

get_cmty_louvain(graph)

Arguments

graph

a graph object of class dgr_graph.

Value

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

Examples

# NOT RUN {
# Create a random graph
graph <-
  create_random_graph(
    n = 10, m = 22,
    set_seed = 23)

# Get the group membership values for
# all nodes in the graph through the
# multi-level optimization of modularity
# algorithm
get_cmty_louvain(graph)
#>    id louvain_group
#> 1   1             2
#> 2   2             1
#> 3   3             1
#> 4   4             2
#> 5   5             2
#> 6   6             2
#> 7   7             1
#> 8   8             2
#> 9   9             1
#> 10 10             2

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

# Display the graph's node data frame
get_node_df(graph)
#>    id type label value louvain_group
#> 1   1 <NA>     1   6.0             2
#> 2   2 <NA>     2   2.5             1
#> 3   3 <NA>     3   3.5             1
#> 4   4 <NA>     4   7.5             2
#> 5   5 <NA>     5   8.5             2
#> 6   6 <NA>     6   4.5             2
#> 7   7 <NA>     7  10.0             1
#> 8   8 <NA>     8  10.0             2
#> 9   9 <NA>     9   8.5             1
#> 10 10 <NA>    10  10.0             2
# }