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Delete a node from an existing graph object

Source: R/delete_node.R
delete_node.Rd

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.

See also

Other node creation and removal: add_n_node_clones(), add_n_nodes(), add_n_nodes_ws(), add_node(), add_node_clones_ws(), add_node_df(), add_nodes_from_df_cols(), add_nodes_from_table(), colorize_node_attrs(), copy_node_attrs(), create_node_df(), delete_nodes_ws(), drop_node_attrs(), join_node_attrs(), layout_nodes_w_string(), mutate_node_attrs(), mutate_node_attrs_ws(), node_data(), recode_node_attrs(), rename_node_attrs(), rescale_node_attrs(), set_node_attr_to_display(), set_node_attr_w_fcn(), set_node_attrs(), set_node_attrs_ws(), set_node_position()

Examples

# 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
graph %>% get_node_ids()
#> [1] 1 2 4 5

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