Bad Chart Autopsy

FORENSIC VISUALIZATION UNIT · CASE 24-08

A chart can render perfectly and still fail its reader.

Atlas appears to dominate this benchmark. Follow the audit to see how the chart creates that impression, then compare a repaired version using the same values.

Submitted claim“Atlas crushes the competition.”
PROCEDURE 01

Intake

Atlas looks far ahead of Ember. Look closely at the axis, though: the bars start at 96, making a small difference appear much larger.

Evidence A-01SUSPECT
THE TRUST LOOP

A useful audit checks the data, the drawing and the reading experience.

evaluateChart("BarChart", suspectProps) → evaluateChart("DotPlot", repairedProps)