add_vertices
From igraph v1.2.4.1
by Gabor Csardi
Add vertices to a graph
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.
Usage
add_vertices(graph, nv, ..., attr = list())Arguments
- 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.
Value
The graph, with the vertices (and attributes) added.
See Also
Other functions for manipulating graph structure: +.igraph,
add_edges, delete_edges,
delete_vertices, edge,
igraph-minus, path,
vertex
Examples
# NOT RUN {
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)
# }
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