Design comparisons
Paired "Not ideal → Better" charts for common design choices, drawn live by VisDelta with its own advisory warnings and runnable code.
Each pair tells one illustrative story in two forms. The left chart is a reasonable-looking choice that makes the reader's task harder; the right chart answers the same question more directly. Both are real VisDelta states, and the hints under each chart are the visualization warnings VisDelta reports for it.
The guidance is paraphrased from the linked Datawrapper Academy articles. These are contextual choices, not automatic validity rules: VisDelta still renders every chart on this page.
Loading comparisons…