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# RGraph: HTML5 canvas graph library - Donut chart

Formerly the Donut chart was a separate class, though now it's a variant of the Pie chart. This means smaller downloads and a much simpler implementation. Essentially it's a Pie chart with a big hole in the middle. If you want to compare multiple datasets you will probably be better off with something like a stacked or grouped bar chart, as you will be able to make comparisons easier.

- Pie chart API documentation