Query edge attributes of a graph
Usage
edge_attr(graph, name, index = E(graph))Arguments
- graph
The graph
- name
The name of the attribute to query. If missing, then all edge attributes are returned in a list.
- index
An optional edge sequence to query edge attributes for a subset of edges.
See also
Vertex, edge and graph attributes
delete_edge_attr(),
delete_graph_attr(),
delete_vertex_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<-(),
vertex_attr_names()
Examples
g <- make_ring(10) %>%
set_edge_attr("weight", value = 1:10) %>%
set_edge_attr("color", value = "red")
g
#> IGRAPH 593a5ac U-W- 10 10 -- Ring graph
#> + attr: name (g/c), mutual (g/l), circular (g/l), weight (e/n), color
#> | (e/c)
#> + edges from 593a5ac:
#> [1] 1-- 2 2-- 3 3-- 4 4-- 5 5-- 6 6-- 7 7-- 8 8-- 9 9--10 1--10
plot(g, edge.width = E(g)$weight)
