Pie & donut in 1801: History
Pie & donut decides what is being compared in 1801 under “History.” The figure that must stay on the axis is 1801. Drawing it larger does not create a unit. Look first for a cut axis and a missing key. Skip it in cases like: many similar slices, 3-D pie, or comparing two pies.
A seductive part-to-whole shape — powerful in ads, dangerous when slices multiply. Pie & donut encodes values as angle (and area) of a circle slice. Playfair 1801; Florence Nightingale’s coxcomb is a polar cousin, 1858. In reports, ads and assignments it fits two to five parts that sum to a meaningful whole. Skip it when many similar slices, 3-D pie, or comparing two pies.
This page gathers anatomy, fit, craft, failure modes and work / ads / school recipes for Pie & donut. When the story is: two to five parts that sum to a meaningful whole. Playfair 1801; Florence Nightingale’s coxcomb is a polar cousin, 1858 Yes if one claim is visible at a glance in Meta, Google and retail print; otherwise link to a full figure.
Yes for lab reports and poster boards if axes, units and a source line are present. Excel or Google Sheets or PowerPoint; export SVG/PDF. Do not rely on hue alone. Label directly and check greyscale. Pie & donut: honour angle (and area) of a circle slice, and switch when many similar slices, 3-D pie, or comparing two pies.
Read Pie & donut as 1801, “History,” and 1801. A bar with no unit is not those three.1801
Figures to keep
- Year of the chart
- 1801
- Axis figure
- 1801
- Chart
- Pie & donut
- How to read it
- History