DiagrammeR (version 1.0.9)

select_last_nodes_created: Select the last set of nodes created in a graph

Description

Select the last nodes that were created in a graph object of class dgr_graph. This function should ideally be used just after creating the nodes to be selected.

Usage

select_last_nodes_created(graph)

Value

A graph object of class dgr_graph.

Arguments

graph

A graph object of class dgr_graph.

Examples

# Create a graph and add 4 nodes
# in 2 separate function calls
graph <-
  create_graph() %>%
  add_n_nodes(
    n = 2,
    type = "a",
    label = c("a_1", "a_2")) %>%
  add_n_nodes(
    n = 2,
    type = "b",
    label = c("b_1", "b_2"))

# Select the last nodes created (2 nodes
# from the last function call) and then
# set their color to be `red`
graph <-
  graph %>%
  select_last_nodes_created() %>%
  set_node_attrs_ws(
    node_attr = color,
    value = "red") %>%
  clear_selection()

# Display the graph's internal node
# data frame to verify the change
graph %>% get_node_df()