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You know where a layered donut chart would be great? The ingredients of the layers of a donut. Filling, dough, frosting. Sugar, fat, sugar, respectively.


I actually rather like the donut. I know it's not canonical, but it does give you both the visual narrative of increase, and the change in the detailed categories.


Alex: There is something about charts with solid color blocks that appeal to our aesthetic sensibility. The issue is that most of these charts can only convey the most basic of information, such as went up-came down. The donut is very tricky because readers are likely to first size up the areas, which means nothing. In these situations, try applying my self-sufficiency test - remove all the data from the chart, and see if you are still happy with it. If yes, then I'd say use it!


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Kaiser Fung. Business analytics and data visualization expert. Author and Speaker.
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