vertex_attr
Query vertex attributes of a graph
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
A vertex sequence, to query the attribute only for these vertices.
Value
The value of the vertex attribute, or the list of
all vertex attributes, if name is missing.
See Also
Other graph attributes: $.igraph.vs,
$<-.igraph.vs, V<-,
[<-.igraph.vs,
[[<-.igraph.vs,
igraph-vs-attributes,
igraph-vs-attributes,
igraph-vs-attributes,
igraph-vs-attributes,
igraph-vs-attributes;
$.igraph, $<-.igraph,
igraph-dollar, igraph-dollar;
attributes, graph_attr_names,
list.graph.attributes;
delete_edge_attr,
remove.edge.attribute;
delete_graph_attr,
remove.graph.attribute;
delete_vertex_attr,
remove.vertex.attribute;
edge.attributes<-,
edge_attr<-; edge.attributes,
edge_attr,
get.edge.attribute;
edge_attr_names,
list.edge.attributes;
get.graph.attribute,
graph.attributes, graph_attr;
graph.attributes<-,
graph_attr<-;
list.vertex.attributes,
vertex_attr_names;
set.edge.attribute,
set_edge_attr;
set.graph.attribute,
set_graph_attr;
set.vertex.attribute,
set_vertex_attr;
vertex.attributes<-,
vertex_attr<-
Examples
# NOT RUN {
g <- make_ring(10) %>%
set_vertex_attr("color", value = "red") %>%
set_vertex_attr("label", value = letters[1:10])
vertex_attr(g, "label")
vertex_attr(g)
plot(g)
# }