select_last_node: Select last node in a series of node IDs in a graph
Description
Select the last node from a graph object of class
dgr_graph. Strictly, this is the node encompassing the last
record of the graph's node data frame. In practice, this will
typically be the last node added to the graph.
Usage
select_last_node(graph)
Arguments
graph
a graph object of class dgr_graph that is created
using create_graph.