Sparked by this tweet:
Hmm. Might need a log scale on this one. pic.twitter.com/Qgn2GLRWPG
— Benedict Evans (@benedictevans) November 6, 2019
My guideline:
Columns to show trends over time. The shape mimics that of a line chart, you don’t need much space for the column labels (usually years, or months)
Columns for breakdowns. More horizontal space for complicated labels, and a stacked column is a more natural format than stacked bars.
Bars to rank things. The shape mimics a “top 10” top to bottom list, and you can make more space for labels that usually describe things
In this case: bars are better than columns.
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