PIE3S draws 3D pie charts with smooth surfaces and lighting for a more visually appealing appearance. It is syntactically similar to MATLAB's built-in PIE3 command but with some extra optional parameters to control bevelling of the segment edges.
3D pie charts are a terrible way to show statistical data - they take a big chunk of the screen to show a very small set of numbers. And yet somehow they are everywhere. If we have to have them, let's at least make them look good!

Examples are included in the inline help.
These charts can also be used in 2D.