Related chart types
Chord diagram
Network
Sankey
Arc diagram
Edge bundling
A great Sankey Diagram built with R and the networkD3 package. Shows the flow of energy. Chart is interactive: move nodes if necessary, hover links for more information.
Here is an example of Sankey diagram applied to a real data set. Original dataset is available here.
This chart is made using the networkD3 library, and comes from its documentation.
# Load package
library(networkD3)
# Load energy projection data
URL <- "https://cdn.rawgit.com/christophergandrud/networkD3/master/JSONdata/energy.json"
Energy <- jsonlite::fromJSON(URL)
# Now we have 2 data frames: a 'links' data frame with 3 columns (from, to, value), and a 'nodes' data frame that gives the name of each node.
head( Energy$links )
head( Energy$nodes )
# Thus we can plot it
p <- sankeyNetwork(Links = Energy$links, Nodes = Energy$nodes, Source = "source",
Target = "target", Value = "value", NodeID = "name",
units = "TWh", fontSize = 12, nodeWidth = 30)
p
# save the widget
# library(htmlwidgets)
# saveWidget(p, file=paste0( getwd(), "/HtmlWidget/sankeyEnergy.html"))Related chart types