Determines whether a graph is set to be directed or not and returns a logical value to that effect.
a graph object of class
a logical value.
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# Create an empty graph; by default, # new graphs made by `create_graph()` # are directed graph <- create_graph() # Determine whether the graph # is directed graph %>% is_graph_directed() # Use the `set_graph_undirected()` # function and check again whether # the graph is directed graph %>% set_graph_undirected() %>% is_graph_directed()
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