Polar

Polar charts place values by angle and distance from a center, which suits cyclic data like the seasons or compass directions.

Map the day of the year to angle and a value to radius in a radialLine to follow a yearly cycle around a circle.

Plot radialDot marks with a direction on angle and a speed on radius to show where observations cluster.

Use radialBarRadius on a band angle scale to give each category an equal slice whose length shows its value.

Use radialBarAngle with a band radius scale and cornerRadius: "full" to draw rounded bars as concentric rings.

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