set_node_attrs {DiagrammeR} | R Documentation |
From a graph object of class
dgr_graph
or a node data frame, set node
attribute properties for one or more nodes.
set_node_attrs(x, node_attr, values, nodes = NULL)
x |
either 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. |
either a graph object of class
dgr_graph
or a node data frame, depending on
what type of object was supplied to x
.
# Create a node data frame (ndf) nodes <- create_nodes( nodes = c("a", "b", "c", "d"), type = "letter", label = TRUE, value = c(3.5, 2.6, 9.4, 2.7)) # Create an edge data frame (edf) edges <- create_edges( from = c("a", "b", "c"), to = c("d", "c", "a"), rel = "leading_to") # Create a graph graph <- create_graph( nodes_df = nodes, edges_df = edges) # Set attribute `color = "green"` for nodes `a` # and `c` using the graph object graph <- set_node_attrs( x = graph, node_attr = "color", values = "green", nodes = c("a", "c")) # Set attribute `color = "green"`` for nodes `a` # and `c` using the node data frame nodes <- set_node_attrs( x = nodes, node_attr = "color", values = "green", nodes = c("a", "c")) # Set attribute `color = "blue"` for all nodes # the node data frame nodes <- set_node_attrs( x = nodes, node_attr = "color", values = "blue")