This is the Sankey diagram section of the gallery. This chart type allows to display flows, as explained in data-to-viz.com. If you're looking for a simple way to implement it in d3.js, pick an example below.
Sankey plots are built thanks to the
d3-sankey plugin. Input
data must be a nested list providing the nodes
and the
links
of the network. This kind of data can be stored
under several formats: this section shows how to build a sankey
diagram from a few different ones.
A few blocks with more complicated codes to showcase the possibility
of the d3-sankey
plugin