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Donut Chart

Donut Chart (also known as Doughnut chart) is a variation on a Pie chart except it has a round hole in the center which makes it look like a donut, hence the name. This empty space can be used to display additional data.

Configurable inner radius

To make a donut chart out of a regular pie chart, we simply need to set innerRadius setting of the chart.

It can either take relative percent value, or fixed pixel radius.

Demo source