Theory of Data Graphics

Categories: Data Visualization
04th

Above all else show the data.
Data Ink is the non-erasable core of a graphic, the non-redundant ink arranged in response to variation in the numbers represented.

Data-ink ratio = _______data-ink__________
___________Total ink used to print the graphic

__________=    proportion of a graphic’s ink devoted to the non-redundant display of
____________data-information
__________=    1.0 – proportion of a graphic that can be erased without loss of
____________data-information

  • Maximize the data-ink ratio, within reason
  • Erase non-data-ink, within reason

Notes from The Visual Display of Quantitative Information by Edward R. Tufte

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