igraph (version 1.0.0)

is_directed: Check whether a graph is directed

Description

Check whether a graph is directed

Usage

is_directed(graph)

Arguments

graph

The input graph

Value

• Logical scalar, whether the graph is directed.

See Also

Other structural queries: [.igraph; [[.igraph; adjacent_vertices; are.connected, are_adjacent; ecount, gsize; ends, get.edge, get.edges; get.edge.ids; gorder, vcount; head_of; incident_edges; incident; neighbors; tail_of

Examples

g <- make_ring(10)
is_directed(g)

g2 <- make_ring(10, directed = TRUE)
is_directed(g2)