Chord diagrams are an effective way to visualize the relationship between two items within a larger set.

Chord diagrams are especially effective at depicting movement from point A to point B. The example above depicts a chord diagram displaying all flights on a certain airline within specific states in the United States. Other examples of chord diagrams have been used to depict Uber trips within San Francisco and customers switching between various mobile phones brands.

Isolate specific flows within this diagram by hovering your mouse over certain areas.

This Chord diagram is open source and therefore not supported or managed by Looker.