Add a clone of an existing edge to the graph
Add a new edge to a graph object of class dgr_graph which is a clone of an
edge already in the graph. All edge attributes are preserved.
add_edge_clone(graph, edge, from, to)
graph |
A graph object of class |
edge |
An edge ID corresponding to the graph edge to be cloned. |
from |
The outgoing node from which the edge is connected. |
to |
The incoming nodes to which each edge is connected. |
A graph object of class dgr_graph.
Other Edge creation and removal:
add_edge_df(),
add_edges_from_table(),
add_edges_w_string(),
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 a path of
# 2 nodes; supply a common `rel`
# edge attribute for all edges
# in this path and then add a
# `color` edge attribute
graph <-
create_graph() %>%
add_path(
n = 2,
rel = "a") %>%
select_last_edges_created() %>%
set_edge_attrs(
edge_attr = color,
values = "steelblue") %>%
clear_selection()
# Display the graph's internal
# edge data frame
graph %>% get_edge_df()
# Create a new node (will have
# node ID of `3`) and then
# create an edge between it and
# node `1` while reusing the edge
# attributes of edge `1` -> `2`
# (edge ID `1`)
graph_2 <-
graph %>%
add_node() %>%
add_edge_clone(
edge = 1,
from = 3,
to = 1)
# Display the graph's internal
# edge data frame
graph_2 %>% get_edge_df()
# The same change can be performed
# with some helper functions in the
# `add_edge_clone()` function call
graph_3 <-
graph %>%
add_node() %>%
add_edge_clone(
edge = get_last_edges_created(.),
from = get_last_nodes_created(.),
to = 1)
# Display the graph's internal
# edge data frame
graph_3 %>% get_edge_df()Please choose more modern alternatives, such as Google Chrome or Mozilla Firefox.