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Set one or more vertex attributes

Usage

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.

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 dca0fcf 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 dca0fcf (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)