Query vertex attributes of a graph
Usage
vertex_attr(graph, name, index = V(graph))
Arguments
- graph
The graph.
- name
Name of the attribute to query. If missing, then all vertex attributes are returned in a list.
- index
An optional vertex sequence to query the attribute only for these vertices.
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) %>%
set_vertex_attr("color", value = "red") %>%
set_vertex_attr("label", value = letters[1:10])
vertex_attr(g, "label")
#> [1] "a" "b" "c" "d" "e" "f" "g" "h" "i" "j"
vertex_attr(g)
#> $color
#> [1] "red" "red" "red" "red" "red" "red" "red" "red" "red" "red"
#>
#> $label
#> [1] "a" "b" "c" "d" "e" "f" "g" "h" "i" "j"
#>
plot(g)