It is possible to interpret a pie chart by looking at the proportions of the sectors. The angles can be used to work out what proportion of the whole population a pie chart sector represents.

Pie charts should be converted into accessible tables. It is not necessary to describe the visual attributes of the charts, e.g., red wedge, blue lines, etc., unless there is an explicit need such as ...

No slice is drawn if the chart statistic for the midpoint is 0. order the slices by midpoint value in ascending order starting at the three o'clock position and proceeding counterclockwise around the ...