View source: R/is_graph_undirected.R
is_graph_undirected | R Documentation |
Determines whether a graph is set as undirected or not and returns a logical value to that effect.
is_graph_undirected(graph)
graph |
A graph object of class |
A logical value.
# Create an empty graph; by
# default, new graphs made
# by `create_graph()` are
# directed graph, so, use
# `directed = FALSE` to create
# an undirected graph
graph <-
create_graph(
directed = FALSE)
# Determine whether the
# graph is undirected
graph %>% is_graph_undirected()
# Use the `set_graph_directed()`
# function and check again
# as to whether the graph is
# undirected
graph %>%
set_graph_directed() %>%
is_graph_undirected()
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