cache_edge_count_ws {DiagrammeR} | R Documentation |
From a graph object of class
dgr_graph
, get a count of edges available in
a selection and cache that value in the graph for
later retrieval using get_cache
.
Selections of edges can be performed using
the following select_...
functions:
select_edges()
,
select_last_edge()
, or
select_edges_by_node_id()
.
Selections of edges can also be performed using
the following traversal functions:
trav_out_edge()
, trav_in_edge()
,
or trav_both_edge()
.
cache_edge_count_ws(graph, name = NULL)
graph |
a graph object of class
|
name |
an optional name for the cached vector. |
a graph object of class dgr_graph
.
# Create a graph with 5 nodes and 4 edges graph <- create_graph() %>% add_path(n = 5) # Cache a count of edges after creating a selection graph <- graph %>% select_edges_by_node_id(nodes = 2) %>% cache_edge_count_ws(name = "edge_count") # Get the number of edges stored in the cache graph %>% get_cache(name = "edge_count") #> [1] 2