Pie chart is probably one of the most common type of chart. It is a circular graphic which is divided into slices to illustrate numerical proportion. The point of a pie chart is to show the relationship of parts out of a whole. Warning! Pie chart is easily the worst way to

convey information ever developed in the history of data visualization. Thus, it must be avoided and replaced with barplot most of the time. Indeed, it is really difficult for a human to make the difference between the size of similar slices. 3D pie plot

is even worse since it distorts reality. The gallery shows just a few example in case and no 3D pie at all. I invite you to read this blog for an extensive explanation.

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