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
;
-.igraph
, igraph-minus
;
add.edges
, add_edges
;
delete.edges
, delete_edges
;
delete.vertices
,
delete_vertices
; edge
,
edges
; path
;
vertex
, vertices
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)