# adjacent_vertices

From igraph v1.0.1
by Gabor Csardi

##### Adjacent vertices of multiple vertices in a graph

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.

##### Value

A list of vertex sequences.

##### See Also

Other structural queries: `[.igraph`

;
`[[.igraph`

; `are.connected`

,
`are_adjacent`

; `ecount`

,
`gsize`

; `ends`

,
`get.edge`

, `get.edges`

;
`get.edge.ids`

; `gorder`

,
`vcount`

; `head_of`

;
`incident_edges`

; `incident`

;
`is.directed`

, `is_directed`

;
`neighbors`

; `tail_of`

##### Examples

```
# NOT RUN {
g <- make_graph("Zachary")
adjacent_vertices(g, c(1, 34))
# }
```

*Documentation reproduced from package igraph, version 1.0.1, License: GPL (>= 2)*

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