Pie charts show percentages as a circle, divided into segments. A pie chart could be used to show how students travel to school. Each piece of data is shown as a proportion of 360, because there ...

Supplement color-coding of graphs and charts with simple patterns to improve accessibility for colorblind users. Charts should be readable in black and white. For more information on these and other ...

William Playfair, the father of data visualisation, changed the way we understand information. His bar graphs, pie charts, ...

scale each slice to represent its chart statistic. 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 ...

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 ...