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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.
NA
add_vertices(graph, nv, ..., attr = list())
The graph, with the vertices (and attributes) added.
The input graph.
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.
A named list, its elements will be added as vertex attributes, for the newly added vertices. See also details below.
Other functions for manipulating graph structure: +.igraph(), add_edges(), delete_edges(), delete_vertices(), edge(), igraph-minus, path(), vertex()
+.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)
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