This function is similar to neighbors(), but it queries
the adjacent vertices for multiple vertices at once.
Usage
adjacent_vertices(graph, v, mode = c("out", "in", "all", "total"))Arguments
- graph
Input graph.
- v
The vertices to query.
- mode
Whether to query outgoing (‘out’), incoming (‘in’) edges, or both types (‘all’). This is ignored for undirected graphs.
See also
Other structural queries:
[.igraph(),
[[.igraph(),
are_adjacent(),
ends(),
get.edge.ids(),
gorder(),
gsize(),
head_of(),
incident(),
incident_edges(),
is_directed(),
neighbors(),
tail_of()
Examples
g <- make_graph("Zachary")
adjacent_vertices(g, c(1, 34))
#> [[1]]
#> + 16/34 vertices, from 06a69f5:
#> [1] 2 3 4 5 6 7 8 9 11 12 13 14 18 20 22 32
#>
#> [[2]]
#> + 17/34 vertices, from 06a69f5:
#> [1] 9 10 14 15 16 19 20 21 23 24 27 28 29 30 31 32 33
#>