Neighboring (adjacent) vertices in a graphSource:
A vertex is a neighbor of another one (in other words, the two vertices are adjacent), if they are incident to the same edge.
neighbors(graph, v, mode = c("out", "in", "all", "total"))
The input graph.
The vertex of which the adjacent vertices are queried.
Whether to query outgoing (‘out’), incoming (‘in’) edges, or both types (‘all’). This is ignored for undirected graphs.
Other structural queries:
g <- make_graph("Zachary") n1 <- neighbors(g, 1) n34 <- neighbors(g, 34) intersection(n1, n34) #> + 4/34 vertices, from eac2230: #>  9 14 20 32