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Set vertex attributes

Source: R/attributes.R
set_vertex_attr.Rd

Set vertex attributes

Usage

set_vertex_attr(graph, name, index = V(graph), value)

Arguments

graph

The graph.

name

The name of the attribute to set.

index

An optional vertex sequence to set the attributes of a subset of vertices.

value

The new value of the attribute for all (or index) vertices. If NULL, the input is returned unchanged.

Value

The graph, with the vertex attribute added or set.

vcount()

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_attrs(), vertex_attr(), vertex_attr<-(), vertex_attr_names()

Examples

g <- make_ring(10) %>%
  set_vertex_attr("label", value = LETTERS[1:10])
g
#> ── <igraph> Ring graph ────────────────────────────────────────────── a983597 ──
#> ℹ undirected
#> ℹ 10 vertices · 10 edges
#> 
#> ── Attributes ──────────────────────────────────────────────────────────────────
#> → graph:  name <chr>, mutual <lgl>, circular <lgl>
#> → vertex: label <chr>
#> 
#> ── Edges ───────────────────────────────────────────────────────────────────────
#>  [1] 1 ─ 2   2 ─ 3   3 ─ 4   4 ─ 5   5 ─ 6   6 ─ 7   7 ─ 8   8 ─ 9   9 ─ 10 
#> [10] 1 ─ 10 
plot(g)