| set_node_attrs {DiagrammeR} | R Documentation |
From a graph object of
class dgr_graph, set node
attribute values for one or more
nodes.
set_node_attrs(graph, node_attr, values, nodes = NULL)
graph |
a graph object of
class |
node_attr |
the name of the attribute to set. |
values |
the values to be set for the chosen attribute for the chosen nodes. |
nodes |
an optional vector of node IDs for filtering the list of nodes present in the graph. |
a graph object of class
dgr_graph.
# Create a node data frame (ndf)
ndf <-
create_node_df(
n = 4,
type = "basic",
label = TRUE,
value = c(3.5, 2.6, 9.4, 2.7))
# Create an edge data frame (edf)
edf <-
create_edge_df(
from = c(1, 2, 3),
to = c(4, 3, 1),
rel = "leading_to")
# Create a graph
graph <-
create_graph(
nodes_df = ndf,
edges_df = edf)
# Set attribute `color = "green"` for
# nodes `1` and `3` using the graph object
graph <-
graph %>%
set_node_attrs(
node_attr = color,
values = "green",
nodes = c(1, 3))
# View the graph's node data frame
graph %>%
get_node_df()
# Set attribute `color = "blue"` for
# all nodes in the graph
graph <-
graph %>%
set_node_attrs(
node_attr = color,
values = "blue")
# Display the graph's ndf
graph %>%
get_node_df()