DiagrammeR (version 0.9.2)

delete_node: Delete a node from an existing graph object

Description

From a graph object of class dgr_graph, delete an existing node by specifying its node ID.

Usage

delete_node(graph, node)

Arguments

graph

a graph object of class dgr_graph.

node

a node ID for the node to be deleted from the graph.

Value

a graph object of class dgr_graph.

Examples

Run this code
# NOT RUN {
# Create a graph with 5 nodes and
# edges between each in a path
graph <-
  create_graph() %>%
  add_path(n = 5)

# Delete node with ID `3`
graph <- delete_node(graph, node = 3)

# Verify that the node with ID `3`
# is no longer in the graph
get_node_ids(graph)
#> [1] 1 2 4 5

# Also note that edges are removed
# since there were edges between the
# removed node to and from other nodes
get_edges(graph)
#> [1] "1->2" "4->5"
# }

Run the code above in your browser using DataCamp Workspace