DiagrammeR (version 0.9.2)

invert_selection: Invert selection of nodes or edges in a graph

Description

Modify the selection of nodes or edges within a graph object such that all nodes or edges previously unselected will now be selected and vice versa.

Usage

invert_selection(graph)

Arguments

graph

a graph object of class dgr_graph.

Value

a graph object of class dgr_graph.

Examples

# NOT RUN {
# Create a node data frame (ndf)
ndf <-
  create_node_df(
    n = 4,
    type = "standard")

# Create an edge data frame (edf)
edf <-
  create_edge_df(
    from = c(1, 2, 3),
    to = c(4, 3, 1),
    rel = "leading_to")

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

# Select nodes with ID values `1` and `3`
graph <-
  select_nodes(
    graph = graph,
    nodes = c(1, 3))

# Verify that a node selection has been made
get_selection(graph)
#> [1] 1 3

# Invert the selection
graph <- invert_selection(graph)

# Verify that the node selection has been changed
get_selection(graph)
#> [1] 2 4
# }