add_edges_w_string {DiagrammeR} | R Documentation |
With a graph object
of class dgr_graph
, add one
or more edges to the graph using a
text string.
add_edges_w_string(graph, edges, rel = NULL, use_labels = FALSE)
graph |
a graph object of
class |
edges |
a single-length vector
with a character string specifying
the edges. For a directed graph, the
string object should be formatted as
a series of node ID values as
|
rel |
an optional vector specifying the relationship between the connected nodes. |
use_labels |
an option to
use node |
a graph object of class
dgr_graph
.
# Create a graph with 4 nodes graph <- create_graph() %>% add_node(label = "one") %>% add_node(label = "two") %>% add_node(label = "three") %>% add_node(label = "four") # Add edges between nodes using # a character string with node # ID values graph_node_id <- graph %>% add_edges_w_string( edges = "1->2 1->3 2->4 2->3") # Show the graph's internal # edge data frame graph_node_id %>% get_edge_df() # Add edges between nodes using # a character string with node # label values and setting # `use_labels = TRUE`; note that # all nodes must have unique # `label` values to use this graph_node_label <- graph %>% add_edges_w_string( edges = "one->two one->three two->four two->three", use_labels = TRUE) # Show the graph's internal # edge data frame (it's the # same as before) graph_node_label %>% get_edge_df()