Choropleth story maps in : Shared baseline
When should I avoid Choropleth story maps? Skip it in cases like: raw counts without normalizing by population Clip Choropleth story maps from a paper and keep the axis sentence, not the colour. Year , line “Shared baseline,” figure 1826. Colour alone does not carry size. PowerPoint, Excel or Google Sheets and Meta, Google and retail print share the same geometry.
When should I avoid Choropleth story maps? Skip it in cases like: raw counts without normalizing by population or area. Baron Charles Dupin (1826); modern TopoJSON + D3 geo pipelines color of administrative regions mapped to a quantitative rate 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. Choropleth story maps: honour color of administrative regions mapped to a quantitative rate, and switch when raw counts without normalizing by population or area.
The core mark of Choropleth story maps is color of administrative regions mapped to a quantitative rate. regional comparisons, civics assignments, territory KPIs The eye compares length and position more accurately than area. Decoration rarely persuades; it slows reading. Perspective distortion wrecks comparison. Keep it flat.
Keep axis, unit, and year. If “Shared baseline” is the axis, the figure is 1826 and the year is .1826
Figures to keep
- Year of the chart
- 1826
- Axis figure
- 1826
- Chart
- Choropleth story maps
- How to read it
- Shared baseline
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