Add one or more edges using a text string
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.
Other Edge creation and removal:
add_edge_clone(),
add_edge_df(),
add_edges_from_table(),
add_edge(),
add_forward_edges_ws(),
add_reverse_edges_ws(),
copy_edge_attrs(),
create_edge_df(),
delete_edges_ws(),
delete_edge(),
delete_loop_edges_ws(),
drop_edge_attrs(),
edge_data(),
join_edge_attrs(),
mutate_edge_attrs_ws(),
mutate_edge_attrs(),
recode_edge_attrs(),
rename_edge_attrs(),
rescale_edge_attrs(),
rev_edge_dir_ws(),
rev_edge_dir(),
set_edge_attr_to_display(),
set_edge_attrs_ws(),
set_edge_attrs()
# 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()Please choose more modern alternatives, such as Google Chrome or Mozilla Firefox.