Add edges from an edge data frame to an existing graph object

With a graph object of class dgr_graph, add edges from an edge data frame to that graph.

Usage

add_edge_df(graph, edge_df)

Arguments

graph

A graph object of class dgr_graph.

edge_df

An edge data frame that is created using create_edge_df().

Value

A graph object of class dgr_graph.

See also

Other edge creation and removal: add_edge(), add_edge_clone(), add_edges_from_table(), add_edges_w_string(), add_forward_edges_ws(), add_reverse_edges_ws(), copy_edge_attrs(), create_edge_df(), delete_edge(), delete_edges_ws(), delete_loop_edges_ws(), drop_edge_attrs(), edge_data(), join_edge_attrs(), mutate_edge_attrs(), mutate_edge_attrs_ws(), recode_edge_attrs(), rename_edge_attrs(), rescale_edge_attrs(), rev_edge_dir(), rev_edge_dir_ws(), set_edge_attr_to_display(), set_edge_attrs(), set_edge_attrs_ws()

Examples

# Create a graph with 4 nodes
# and no edges
graph <-
  create_graph() %>%
  add_n_nodes(n = 4)

# Create an edge data frame (edf)
edf <-
  create_edge_df(
    from = c(1, 2, 3),
      to = c(4, 3, 1))

# Add the edge data frame to
# the graph object to create
# a graph with both nodes
# and edges
graph <-
  graph %>%
  add_edge_df(
    edge_df = edf)

# Get the graph's edges to
# verify that the edf had
# been added
graph %>%
  get_edges(
    return_type = "vector")
#> [1] "1->4" "2->3" "3->1"