Excellent article. Faceted visualisation is an incredibly powerful technique.
Something the author hints at but isn't quite explicit: manual inspection of individual examples from your dataset can help you understand what questions to ask, what category to facet on, or the bug in your aggregation.
Something the author hints at but isn't quite explicit: manual inspection of individual examples from your dataset can help you understand what questions to ask, what category to facet on, or the bug in your aggregation.