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This function is called inside sankey_drake_graph(), which typical users call more often. A legend is unfortunately unavailable for the graph itself, but you can see what all the colors mean with visNetwork::visNetwork(drake::legend_nodes()).


  file = character(0),
  selfcontained = FALSE,



List of data frames generated by drake_graph_info(). There should be 3 data frames: nodes, edges, and legend_nodes.


Name of a file to save the graph. If NULL or character(0), no file is saved and the graph is rendered and displayed within R. If the file ends in a .png, .jpg, .jpeg, or .pdf extension, then a static image will be saved. In this case, the webshot package and PhantomJS are required: install.packages("webshot"); webshot::install_phantomjs(). If the file does not end in a .png, .jpg, .jpeg, or .pdf extension, an HTML file will be saved, and you can open the interactive graph using a web browser.


Logical, whether to save the file as a self-contained HTML file (with external resources base64 encoded) or a file with external resources placed in an adjacent directory. If TRUE, pandoc is required.


Arguments passed to networkD3::sankeyNetwork().


A visNetwork graph.


if (FALSE) {
isolate_example("Quarantine side effects.", {
load_mtcars_example() # Get the code with drake_example("mtcars").
if (suppressWarnings(require("knitr"))) {
if (requireNamespace("networkD3", quietly = TRUE)) {
if (requireNamespace("visNetwork", quietly = TRUE)) {
# Instead of jumpting right to sankey_drake_graph(), get the data frames
# of nodes, edges, and legend nodes.
sankey_drake_graph(my_plan) # Jump straight to the interactive graph.
# Show the legend separately.
visNetwork::visNetwork(nodes = drake::legend_nodes())
# Get the node and edge info that sankey_drake_graph() just plotted:
graph <- drake_graph_info(my_plan)
# You can pass the data frames right to render_sankey_drake_graph()
# (as in sankey_drake_graph()) or you can create
# your own custom visNewtork graph.