Hi, author here. Plotly was the biggest surprise for me when I was writing the two blog posts, and I definitely want to try out plotly.js as well. Could take a few weeks, though :) Go ahead and recreate that chart yourself! I already had John Muyskens from the Washington Post Graphics team add the brand news Python Leather library to the repo: https://github.com/OpenNewsLabs/onechart-twelvechartinglibra...