View source: R/add_edges_w_string.R
add_edges_w_string | 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
.
Other edge creation and removal:
add_edge()
,
add_edge_clone()
,
add_edge_df()
,
add_edges_from_table()
,
add_forward_edges_ws()
,
add_reverse_edges_ws()
,
copy_edge_attrs()
,
create_edge_df()
,
delete_edge()
,
delete_edges_ws()
,
delete_loop_edges_ws()
,
drop_edge_attrs()
,
edge_data()
,
join_edge_attrs()
,
mutate_edge_attrs()
,
mutate_edge_attrs_ws()
,
recode_edge_attrs()
,
rename_edge_attrs()
,
rescale_edge_attrs()
,
rev_edge_dir()
,
rev_edge_dir_ws()
,
set_edge_attr_to_display()
,
set_edge_attrs()
,
set_edge_attrs_ws()
# 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()
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