The selector for the slices of a pie, donut or polar area chart.
Each slice sits in a series group of its own and is drawn in data order —
a zero-value slice and a slice hidden through the legend included, at zero
sweep — so one selector matches exactly one path per value. When some
slices are left out (hidden through the legend), the others are listed by
their series group, which still matches them in data order.
The selector for the slices of a pie, donut or polar area chart.
Each slice sits in a series group of its own and is drawn in data order — a zero-value slice and a slice hidden through the legend included, at zero sweep — so one selector matches exactly one path per value. When some slices are left out (hidden through the legend), the others are listed by their series group, which still matches them in data order.