Check whether a graph is directed

is_directed(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

[.igraph

[[.igraph

adjacent_vertices

are_adjacent

ends

get.edge.ids

gorder

gsize

head_of

incident_edges

incident

neighbors

tail_of

# NOT RUN { g <- make_ring(10) is_directed(g) g2 <- make_ring(10, directed = TRUE) is_directed(g2) # }

Run the code above in your browser using DataLab