node_topology function

Node properties related to the graph topology

These functions calculate properties that are dependent on the overall topology of the graph.

node_dominator(root, mode = "out")

node_topo_order(mode = "out")

Arguments

• root: The node to start the dominator search from
• mode: How should edges be followed. Either 'in' or 'out'

Returns

A vector of the same length as the number of nodes in the graph

Functions

• node_dominator(): Get the immediate dominator of each node. Wraps igraph::dominator_tree().
• node_topo_order(): Get the topological order of nodes in a DAG. Wraps igraph::topo_sort().

Examples

# Sort a graph based on its topological order
create_tree(10, 2) %>%
  arrange(sample(graph_order())) %>%
  mutate(old_ind = seq_len(graph_order())) %>%
  arrange(node_topo_order())