Articles
Deep-dives into chart technique, design decisions, and data storytelling.
Part-to-wholePreview only
When to use a treemap (and when to reach for a bar chart instead)
Treemaps are visually striking but often misused. Here's a clear decision framework.
18 Mar 2026
ColourPreview only
Sequential, diverging, and categorical: colour scales explained
Choosing the wrong colour scale is one of the most common dataviz mistakes.
12 Mar 2026
TechniquePreview only
Small multiples vs. animation: which is better for change over time?
Edward Tufte championed small multiples. But animation has real strengths too.
6 Mar 2026
RelationshipsPreview only
Five scatter plot pitfalls — and how to avoid them
Overplotting, aspect ratios, and axis truncation are the most common traps.
28 Feb 2026
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