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Data Visualization with D3

Craft custom charts with D3 scales, layouts, and transitions.

Why it matters

Good visualizations make complex data legible.

Core steps

  • Map data to visuals using scales (linear, time, band).
  • Use SVG groups to compose axes, labels, and marks.
  • Add transitions sparingly to highlight change.
  • Keep accessibility in mind with titles and aria labels.

Example snippet

const x = d3.scaleBand().domain(data.map(d => d.label)).range([0, width]).padding(0.2);
const y = d3.scaleLinear().domain([0, d3.max(data, d => d.value)]).range([height, 0]);