The Scottish Scoundrel Who Changed How We See Data
http://www.atlasobscura.com/articles/the-scottish-scoundrel-who-changed-how-we-see-data [www.atlasobscura.com]
2017-07-26 21:41
When he wasn’t blackmailing lords and being sued for libel, William Playfair invented the pie chart, the bar graph, and the line graph.
source: MR