head_of: Head of the edge(s) in a graph

In igraph: Network Analysis and Visualization

Head of the edge(s) in a graph

Description

For undirected graphs, head and tail is not defined. In this case head_of() returns vertices incident to the supplied edges, and tail_of() returns the other end(s) of the edge(s).

Usage

head_of(graph, es)

Arguments

graph	The input graph.
es	The edges to query.

Value

A vertex sequence with the head(s) of the edge(s).

See Also

Other structural queries: [.igraph(), [[.igraph(), adjacent_vertices(), are_adjacent(), ends(), get_edge_ids(), gorder(), gsize(), incident(), incident_edges(), is_directed(), neighbors(), tail_of()

igraph documentation built on Oct. 20, 2024, 1:06 a.m.