Section A 1786
William Playfair
The Commercial and Political Atlas, and the 1821 wheat and wages chart
Invented the time series and the bar chart.
- The rule
- A quantity is a line over time, and the events of the period sit as a band across the top of the sheet, never written into the line.
- Ours
- A fifteen-year record drawn above a rail, with the closures beneath it.
- Not ours
- His engraved ornament.