add_vertices {igraph} | R Documentation |
If attributes are supplied, and they are not present in the graph,
their values for the original vertices of the graph are set to
NA
.
add_vertices(graph, nv, ..., attr = list())
graph |
The input graph. |
nv |
The number of vertices to add. |
... |
Additional arguments, they must be named, and they will be added as vertex attributes, for the newly added vertices. See also details below. |
attr |
A named list, its elements will be added as vertex attributes, for the newly added vertices. See also details below. |
The graph, with the vertices (and attributes) added.
Other functions for manipulating graph structure:
+.igraph()
,
add_edges()
,
delete_edges()
,
delete_vertices()
,
edge()
,
igraph-minus
,
path()
,
vertex()
g <- make_empty_graph() %>%
add_vertices(3, color = "red") %>%
add_vertices(2, color = "green") %>%
add_edges(c(1,2, 2,3, 3,4, 4,5))
g
V(g)[[]]
plot(g)