DiagrammeR (version 0.8.4)

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 that is created using create_graph.

Value

a graph object of class dgr_graph.

Examples

# Create a node data frame (ndf)
nodes <-
  create_nodes(
    nodes = c("a", "b", "c", "d"),
    type = "letter")

# Create an edge data frame (edf)
edges <-
  create_edges(
    from = c("a", "b", "c"),
    to = c("d", "c", "a"),
    rel = "leading_to")

# Create a graph
graph <-
  create_graph(nodes_df = nodes,
               edges_df = edges)

# Select nodes `a` and `c`
graph <-
  select_nodes(
    graph = graph,
    nodes = c("a", "c"))

# Verify that a node selection has been made
get_selection(graph)
#> $nodes
#> [1] "a" "c"

# Invert the selection
graph <- invert_selection(graph = graph)

# Verify that the node selection has been changed
get_selection(graph)
#> $nodes
#> [1] "b" "d"