igraph (version 1.0.1)

edge_attr: Query edge attributes of a graph

Description

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.

Value

The value of the edge attribute, or the list of all edge 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_attr_names, list.edge.attributes; get.graph.attribute, graph.attributes, graph_attr; get.vertex.attribute, vertex.attributes, vertex_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_edge_attr("weight", value = 1:10) %>%
  set_edge_attr("color", value = "red")
g
plot(g, edge.width = E(g)$weight)
# }