Set one or more vertex attributes — vertex_attr<- • igraph

Set one or more vertex attributes

vertex_attr(graph, name, index = V(graph)) <- value

Arguments

graph: The graph.
name: The name of the vertex attribute to set. If missing, then value must be a named list, and its entries are set as vertex attributes.
index: An optional vertex sequence to set the attributes of a subset of vertices.
value: The new value of the attribute(s) for all (or index) vertices.

Value

The graph, with the vertex attribute(s) added or set.

See also

Vertex, edge and graph attributes delete_edge_attr(), delete_graph_attr(), delete_vertex_attr(), edge_attr(), edge_attr<-(), edge_attr_names(), graph_attr(), graph_attr<-(), graph_attr_names(), igraph-attribute-combination, igraph-dollar, igraph-vs-attributes, set_edge_attr(), set_graph_attr(), set_vertex_attr(), vertex_attr(), vertex_attr_names()

Examples

g <- make_ring(10)
vertex_attr(g) <- list(
  name = LETTERS[1:10],
  color = rep("yellow", gorder(g))
)
vertex_attr(g, "label") <- V(g)$name
g
#> IGRAPH 09356e5 UN-- 10 10 -- Ring graph
#> + attr: name (g/c), mutual (g/l), circular (g/l), name (v/c), color
#> | (v/c), label (v/c)
#> + edges from 09356e5 (vertex names):
#>  [1] A--B B--C C--D D--E E--F F--G G--H H--I I--J A--J
plot(g)