by Torstein Hønsi
A pie chart is a circular chart divided into sectors which is proportional to the quantity it represents.
A donut chart is created by adding multiple pie series to the chart, setting the size and innerSize of each series to create concentric rings. See the demo page for donuts.
A 3D-like ball look is created by applying radial gradient background colors for the slices. See the demo page for radial gradients.