Pie 2D

1: Pie with internal labels.

2: Pie with external labels and precision=0.

3/4: Two pies with internal and external labels with a constant radius.

5/6: Pie with internal custom labels and custom colors (#6 is rotated).

7: Degenerated pie with 1 element.

8: Degenerated pie with 1 positive elements (out of 5).

9: Pie with no data.

10: Pie with all data zero (no data).

11: Pie with all data zero (no data) and a message.

That's all Folks!