DiagrammeR (version 0.8.2)

set_node_attr: Set node attributes

Description

From a graph object of class dgr_graph or a node data frame, set node attribute properties for one or more nodes.

Usage

set_node_attr(x, nodes = NULL, node_attr, values)

Arguments

x

either a graph object of class dgr_graph that is created using create_graph, or a node data frame.

nodes

an optional vector of node IDs for filtering list of nodes present in the graph.

node_attr

the name of the attribute to set.

values

the values to be set for the chosen attribute for the chosen nodes.

Value

either a graph object of class dgr_graph or a node data frame, depending on what type of object was supplied to x.

Examples

## Not run: 
# # Create a simple graph
# nodes <-
#   create_nodes(nodes = c("a", "b", "c", "d"),
#                type = "letter",
#                label = TRUE,
#                value = c(3.5, 2.6, 9.4, 2.7))
# 
# edges <-
#   create_edges(from = c("a", "b", "c"),
#                to = c("d", "c", "a"),
#                rel = "leading_to")
# 
# 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_attr(x = graph, nodes = c("a", "c"),
#                 node_attr = "color", values = "green")
# 
# # Set attribute 'color = "green"' for nodes "a" and "c" using
# # the node data frame
# nodes <-
#   set_node_attr(x = nodes, nodes = c("a", "c"),
#                 node_attr = "color", values = "green")
# 
# #' # Set attribute 'color = "blue"' for all nodes
# # the node data frame
# nodes <-
#   set_node_attr(x = nodes, node_attr = "color", values = "blue")
# ## End(Not run)