set_edge_attrs: Set edge attribute values

Description

From a graph object of class dgr_graph, set edge attribute values for one or more edges.

Usage

set_edge_attrs(graph, edge_attr, values, from = NULL, to = NULL)

Value

A graph object of class dgr_graph.

Arguments

graph: A graph object of class dgr_graph.
edge_attr: The name of the attribute to set. Some examples are located in edge_aes()
values: The values to be set for the chosen attribute for the chosen edges.
from: An optional vector of node IDs from which the edge is outgoing for filtering list of nodes with outgoing edges in the graph.
to: An optional vector of node IDs from which the edge is incoming for filtering list of nodes with incoming edges in the graph.

Other edge creation and removal: add_edge(), add_edge_clone(), add_edge_df(), add_edges_from_table(), add_edges_w_string(), add_forward_edges_ws(), add_reverse_edges_ws(), copy_edge_attrs(), create_edge_df(), delete_edge(), delete_edges_ws(), delete_loop_edges_ws(), drop_edge_attrs(), edge_data(), join_edge_attrs(), mutate_edge_attrs(), mutate_edge_attrs_ws(), recode_edge_attrs(), rename_edge_attrs(), rescale_edge_attrs(), rev_edge_dir(), rev_edge_dir_ws(), set_edge_attr_to_display(), set_edge_attrs_ws()

Examples

Run this code

# Create a simple graph
ndf <-
  create_node_df(
    n = 4,
    type = "basic",
    label = TRUE,
    value = c(3.5, 2.6, 9.4, 2.7))

edf <-
  create_edge_df(
    from = c(1, 2, 3),
    to = c(4, 3, 1),
    rel = "leading_to")

graph <-
  create_graph(
    nodes_df = ndf,
    edges_df = edf)

# Set attribute `color = "green"`
# for edges `1`->`4` and `3`->`1`
# in the graph
graph <-
  graph %>%
  set_edge_attrs(
    edge_attr = color,
    values = "green",
    from = c(1, 3),
    to = c(4, 1))

# Set attribute `color = "blue"`
# for all edges in the graph
graph <-
  graph %>%
  set_edge_attrs(
    edge_attr = color,
    values = "blue")

# Set attribute `color = "pink"`
# for all edges in graph outbound
# from node with ID value `1`
graph <-
  graph %>%
  set_edge_attrs(
    edge_attr = color,
    values = "pink",
    from = 1)

# Set attribute `color = "black"`
# for all edges in graph inbound
# to node with ID `1`
graph <-
  graph %>%
  set_edge_attrs(
    edge_attr = color,
    values = "black",
    to = 1)

Run the code above in your browser using DataLab