A bar chart wrapped in a circle, where bars extend outward from the center. Effective for cyclic categorical data such as months of the year or hours of the day.
When We Find Space Rocks — Asteroid Discoveries by Month
Best for
- Cyclic categorical data like months or days of the week
- Comparing magnitudes across categories in a compact circular layout
- Adding visual interest to a dashboard with periodic data
Avoid when
- Precise value comparison is important — use a standard bar chart
- Data has no natural circular ordering
- Too many categories make labels overlap