Who made the lollipop chart, and for what?

Andy Cotgreave named and popularized the lollipop chart in 2011, as a way to reduce the ink and visual weight of many long bars. The form itself has a precursor in Cleveland’s dot charts.

What Is a Bar Chart Race?

Gridded Cartogram

Pseudo-Continuous Cartogram

Non-Continuous Cartogram

Continuous Cartogram

Natural Earth's POV (Point of View) Data

Proportional Flow Map

Graduated Flow Map

Spark Words