Chart Library
Every chart, and when to use it.
11 chart types in plain language: when they work, when they fail, and the mistakes to avoid.
Bar chart
Compare a value across categories. The safest chart you own.Column chart
A vertical bar. Great for a handful of time buckets like months.Line chart
The gold standard for change over continuous time.Area chart
A line with the volume beneath it filled in.Pie chart
Parts of one whole — and only when there are very few parts.Donut chart
A pie with the middle freed up for a headline number.Scatter plot
Two numbers per item — reveals correlation, clusters, outliers.Histogram
The shape of one number across a population — its distribution.Heatmap
A grid where colour intensity encodes the value.Treemap
Nested rectangles sized by value — composition with hierarchy.RegionRevenueYoY
North$184K+12%
Online$156K+24%
South$142K+4%
West$120K−2%