DiagrammeR (version 0.8.2)

add_node_df: Add nodes from a node data frame to an existing graph object

Description

With a graph object of class dgr_graph add nodes from a node data frame to that graph.

Usage

add_node_df(graph, node_df)

Arguments

graph

a graph object of class dgr_graph that is created using create_graph.

node_df

a node data frame that is created using create_nodes.

Value

a graph object of class dgr_graph.

Examples

## Not run: 
# # Create an empty graph
# graph <- create_graph()
# 
# # Create a node data frame
# nodes <-
#   create_nodes(nodes = c("a", "b", "c", "d"),
#                type = "letter",
#                color = c("red", "green", "grey", "blue"),
#                value = c(3.5, 2.6, 9.4, 2.7))
# 
# # Add the node data frame to the graph object to create a
# # graph with nodes
# graph <- add_node_df(graph = graph, node_df = nodes)
# 
# get_node_df(graph)
# #>   nodes   type label color value
# #> 1     a letter     a   red   3.5
# #> 2     b letter     b green   2.6
# #> 3     c letter     c  grey   9.4
# #> 4     d letter     d  blue   2.7
# 
# # Create another node data frame
# nodes_2 <-
#   create_nodes(nodes = c("e", "f", "g", "h"),
#                type = "letter",
#                color = c("white", "brown", "aqua", "pink"),
#                value = c(1.6, 6.4, 0.8, 4.2))
# 
# # Add the second node data frame to the graph object to
# # add more nodes with attributes to the graph
# graph <- add_node_df(graph = graph, node_df = nodes_2)
# 
# get_node_df(graph)
# #>   nodes   type label color value
# #> 1     a letter     a   red   3.5
# #> 2     b letter     b green   2.6
# #> 3     c letter     c  grey   9.4
# #> 4     d letter     d  blue   2.7
# #> 5     e letter     e white   1.6
# #> 6     f letter     f brown   6.4
# #> 7     g letter     g  aqua   0.8
# #> 8     h letter     h  pink   4.2
# ## End(Not run)