Check whether a graph is directed
Check whether a graph is directed
is_directed(graph)
graph |
The input graph |
Logical scalar, whether the graph is directed.
Other structural queries:
[.igraph(),
[[.igraph(),
adjacent_vertices(),
are_adjacent(),
ends(),
get.edge.ids(),
gorder(),
gsize(),
head_of(),
incident_edges(),
incident(),
neighbors(),
tail_of()
g <- make_ring(10) is_directed(g) g2 <- make_ring(10, directed = TRUE) is_directed(g2)
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