drake (version 7.1.0)

render_drake_graph: Render a visualization using the data frames generated by drake_graph_info().

Description

This function is called inside vis_drake_graph(), which typical users call more often.

Usage

render_drake_graph(graph_info, file = character(0),
  layout = "layout_with_sugiyama", direction = "LR", hover = TRUE,
  main = graph_info$default_title, selfcontained = FALSE,
  navigationButtons = TRUE, ncol_legend = 1, collapse = TRUE, ...)

Arguments

graph_info

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

file

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.

layout

Name of an igraph layout to use, such as 'layout_with_sugiyama' or 'layout_as_tree'. Be careful with 'layout_as_tree': the graph is a directed acyclic graph, but not necessarily a tree.

direction

An argument to visNetwork::visHierarchicalLayout() indicating the direction of the graph. Options include 'LR', 'RL', 'DU', and 'UD'. At the time of writing this, the letters must be capitalized, but this may not always be the case ;) in the future.

hover

Logical, whether to show the command that generated the target when you hover over a node with the mouse. For imports, the label does not change with hovering.

main

Character string, title of the graph.

selfcontained

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. The selfcontained argument only applies to HTML files. In other words, if file is a PNG, PDF, or JPEG file, for instance, the point is moot.

navigationButtons

Logical, whether to add navigation buttons with visNetwork::visInteraction(navigationButtons = TRUE)

ncol_legend

Number of columns in the legend nodes. To remove the legend entirely, set ncol_legend to NULL or 0.

collapse

Logical, whether to allow nodes to collapse if you double click on them. Analogous to visNetwork::visOptions(collapse = TRUE) or visNetwork::visOptions(collapse = TRUE).

...

Arguments passed to visNetwork().

Value

A visNetwork graph.

See Also

vis_drake_graph(), sankey_drake_graph(), drake_ggraph()

Examples

# NOT RUN {
test_with_dir("Quarantine side effects.", {
if (suppressWarnings(require("knitr"))) {
load_mtcars_example() # Get the code with drake_example("mtcars").
if (requireNamespace("visNetwork", quietly = TRUE)) {
# Instead of jumpting right to vis_drake_graph(), get the data frames
# of nodes, edges, and legend nodes.
config <- drake_config(my_plan) # Internal configuration list
vis_drake_graph(config) # Jump straight to the interactive graph.
# Get the node and edge info that vis_drake_graph() just plotted:
graph <- drake_graph_info(config)
# You can pass the data frames right to render_drake_graph()
# (as in vis_drake_graph()) or you can create
# your own custom visNewtork graph.
render_drake_graph(graph, width = '100%') # Width is passed to visNetwork.
# Optionally visualize clusters.
config$plan$large_data <- grepl("large", config$plan$target)
graph <- drake_graph_info(
  config, group = "large_data", clusters = c(TRUE, FALSE))
render_drake_graph(graph)
# You can even use clusters given to you for free in the `graph$nodes`
# data frame.
graph <- drake_graph_info(
  config, group = "status", clusters = "imported")
render_drake_graph(graph)
}
}
})
# }