Though his inventions -- bar graphs, line charts, and pie charts -- are used every day ... a book that introduced the first bar graph and line charts. Instead of dry tables, Playfair used these ...

Today, we update one of our favorite charts, which looks at how orders route, where trades actually get done and what economic incentives each part of the market structure pies use to attract ...

Finn's bar graph, shows those numbers as different-sized bars. And Plimble's pie chart shows those same numbers as different sizes slices of pie. These are just three different ways of organising ...