Chord Diagram
Chord Diagram visualizes flows, directions and magnitude between a set of categories.
Each category is displayed as an arc around the outside of a circle, and the connections between them are drawn as curved bands, or chords, inside the circle.
The size of each arc usually represents the total volume associated with that category, while the width of each chord represents the strength of connection between two categories.
Use a Chord Diagram when:
- You want to visualize many-to-many relationships
- You need to show movement or flow between groups
- The main goal is to highlight interconnectedness
- Your data contains source-target pairs with values, for example, country-to-country trade or customer movement between subscription plans
