select_last_edge {DiagrammeR} | R Documentation |
Select the last edge from a graph
object of class dgr_graph
. Strictly, this is
the edge definition that encompasses the last record
of the graph's edge data frame. In practice, this
will typically be the last edge created.
select_last_edge(graph)
graph |
a graph object of class
|
a graph object of class dgr_graph
.
# Create an empty graph graph <- create_graph() # Add three nodes to the graph graph <- graph %>% add_n_nodes(3) # Add two edges to the graph graph %<>% add_edge(1, 2) %>% add_edge(2, 3) # Select the last edge added graph <- graph %>% select_last_edge() # Get the current selection graph %>% get_selection() #> [1] 2