Neighborhood of graph vertices

connect.neighborhood() was renamed to connect() to create a more consistent API.

Usage

connect.neighborhood(graph, order, mode = c("all", "out", "in", "total"))

graph: The input graph.
order: Integer giving the order of the neighborhood. Negative values indicate an infinite order.
mode: Character constant, it specifies how to use the direction of the edges if a directed graph is analyzed. For ‘out’ only the outgoing edges are followed, so all vertices reachable from the source vertex in at most order steps are counted. For ‘"in"’ all vertices from which the source vertex is reachable in at most order steps are counted. ‘"all"’ ignores the direction of the edges. This argument is ignored for undirected graphs.