Heatmap in 1873: Shared baseline
Craft: honour color value of a cell in a row-column grid and decoration falls away. Keep Heatmap with “Shared baseline” and 1873 from 1873. The scale must show zero (or a declared break) and units.
In reports, ads and assignments it fits patterns across two categorical axes at once. Skip it when precise lookup of a number, or a rainbow that is not color-blind safe. This page gathers anatomy, fit, craft, failure modes and work / ads / school recipes for Heatmap. When the story is: patterns across two categorical axes at once.
Skip it in cases like: precise lookup of a number, or a rainbow that is not color-blind safe. Toussaint Loua’s 1873 crime tables; later Toussaint/Bertin and 1990s gene arrays color value of a cell in a row-column grid 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. Heatmap: honour color value of a cell in a row-column grid, and switch when precise lookup of a number, or a rainbow that is not color-blind safe.
Keep axis, unit, and year. If “Shared baseline” is the axis, the figure is 1873 and the year is 1873. Keep Heatmap with “Shared baseline” and 1873 from 1873. 18731873
Figures to keep
- Year of the chart
- 1873
- Axis figure
- 1873
- Chart
- Heatmap
- How to read it
- Shared baseline
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