The new edges are given as a vertex sequence, e.g. internal
numeric vertex ids, or vertex names. The first edge points from
edges[1] to edges[2], the second from edges[3]
to edges[4], etc.
add_edges(graph, edges, ..., attr = list())The input graph
The edges to add, a vertex sequence with even number of vertices.
Additional arguments, they must be named, and they will be added as edge attributes, for the newly added edges. See also details below.
A named list, its elements will be added as edge attributes, for the newly added edges. See also details below.
The graph, with the edges (and attributes) added.
If attributes are supplied, and they are not present in the graph,
their values for the original edges of the graph are set to NA.
Other functions for manipulating graph structure: +.igraph,
add_vertices, delete_edges,
delete_vertices, edge,
igraph-minus, path,
vertex
# NOT RUN {
g <- make_empty_graph(n = 5) %>%
add_edges(c(1,2, 2,3, 3,4, 4,5)) %>%
set_edge_attr("color", value = "red") %>%
add_edges(c(5,1), color = "green")
E(g)[[]]
plot(g)
# }
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