And things get even more dramatic when you're talking about 3-D pie charts. As Hickey writes, "an angled 3D pie chart is an excellent way to lie to you." ...

Each slice displays a different color because, by default, pie charts are patterned by midpoint. Because the default outline color is also the first color in the list, the example uses the COUTLINE= ...

While 3D pie charts are problematic, one example where depth cues have been proven to help is network diagrams. This is a common chart type used, for example, for Twitter followers or President ...