edge_attr: Query edge attributes of a graph

Description Usage Arguments Value See Also Examples

View source: R/attributes.R

Description

Query edge attributes of a graph

Usage

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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: delete_edge_attr(), delete_graph_attr(), delete_vertex_attr(), edge_attr<-(), edge_attr_names(), graph_attr<-(), graph_attr_names(), graph_attr(), igraph-dollar, igraph-vs-attributes, set_edge_attr(), set_graph_attr(), set_vertex_attr(), vertex_attr<-(), vertex_attr_names(), vertex_attr()

Examples

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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)

Example output

Attaching package: 'igraph'

The following objects are masked from 'package:stats':

    decompose, spectrum

The following object is masked from 'package:base':

    union

IGRAPH d006da0 U-W- 10 10 -- Ring graph
+ attr: name (g/c), mutual (g/l), circular (g/l), weight (e/n), color
| (e/c)
+ edges from d006da0:
 [1] 1-- 2 2-- 3 3-- 4 4-- 5 5-- 6 6-- 7 7-- 8 8-- 9 9--10 1--10

igraph documentation built on Jan. 8, 2021, 2:19 a.m.

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