% Generated by roxygen2: do not edit by hand
% Please edit documentation in R/interface.R
\name{adjacent_vertices}
\alias{adjacent_vertices}
\title{Adjacent vertices of multiple vertices in a graph}
\usage{
adjacent_vertices(graph, v, mode = c("out", "in", "all", "total"))
}
\arguments{
\item{graph}{Input graph.}

\item{v}{The vertices to query.}

\item{mode}{Whether to query outgoing (\sQuote{out}), incoming
(\sQuote{in}) edges, or both types (\sQuote{all}). This is
ignored for undirected graphs.}
}
\value{
A list of vertex sequences.
}
\description{
This function is similar to \code{\link[=neighbors]{neighbors()}}, but it queries
the adjacent vertices for multiple vertices at once.
}
\section{Related documentation in the C library}{
\href{https://igraph.org/c/html/0.10.17/igraph-Basic.html#igraph_vcount}{\code{vcount()}}
}

\examples{
g <- make_graph("Zachary")
adjacent_vertices(g, c(1, 34))
}
\seealso{
Other structural queries: 
\code{\link{[.igraph}()},
\code{\link{[[.igraph}()},
\code{\link{are_adjacent}()},
\code{\link{ends}()},
\code{\link{get_edge_ids}()},
\code{\link{gorder}()},
\code{\link{gsize}()},
\code{\link{head_of}()},
\code{\link{incident}()},
\code{\link{incident_edges}()},
\code{\link{is_directed}()},
\code{\link{neighbors}()},
\code{\link{tail_of}()}
}
\concept{structural queries}
