Move layout positions of a selection of nodes
With an active selection of nodes, move the position in either the x or y
directions, or both. Nodes in the selection that do not have position
information (i.e., NA values for the x or y node attributes) will be
ignored.
nudge_node_positions_ws(graph, dx, dy)
graph |
A graph object of class |
dx |
A single numeric value specifying the amount that selected nodes
(with non- |
dy |
A single numeric value specifying the amount that selected nodes
(with non- |
This function makes use of an active selection of nodes (and the function
ending with _ws hints at this).
Selections of nodes can be performed using the following node selection
(select_*()) functions: select_nodes(), select_last_nodes_created(),
select_nodes_by_degree(), select_nodes_by_id(), or
select_nodes_in_neighborhood().
Selections of nodes can also be performed using the following traversal
(trav_*()) functions: trav_out(), trav_in(), trav_both(),
trav_out_node(), trav_in_node(), trav_out_until(), or
trav_in_until().
A graph object of class dgr_graph.
# Create a simple graph with 4 nodes
graph <-
create_graph() %>%
add_node(
type = "a",
label = "one") %>%
add_node(
type = "a",
label = "two") %>%
add_node(
type = "b",
label = "three") %>%
add_node(
type = "b",
label = "four")
# Add position information to each of
# the graph's nodes
graph <-
graph %>%
set_node_position(
node = 1, x = 1, y = 1) %>%
set_node_position(
node = 2, x = 2, y = 2) %>%
set_node_position(
node = 3, x = 3, y = 3) %>%
set_node_position(
node = 4, x = 4, y = 4)
# Select all of the graph's nodes using the
# `select_nodes()` function (and only
# specifying the graph object)
graph <- select_nodes(graph)
# Move the selected nodes (all the nodes,
# in this case) 5 units to the right
graph <-
graph %>%
nudge_node_positions_ws(
dx = 5, dy = 0)
# View the graph's node data frame
graph %>% get_node_df()
# Now select nodes that have `type == "b"`
# and move them in the `y` direction 2 units
# (the graph still has an active selection
# and so it must be cleared first)
graph <-
graph %>%
clear_selection() %>%
select_nodes(
conditions = type == "b") %>%
nudge_node_positions_ws(
dx = 0, dy = 2)
# View the graph's node data frame
graph %>% get_node_df()Please choose more modern alternatives, such as Google Chrome or Mozilla Firefox.