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Fork of D3 v5 Zoomable Sunburst

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AAliceBradbury
Last edited Aug 15, 2021
Created on Aug 15, 2021

This interactive sunburst chart visualizes hierarchical data from the `@observablehq/flare` dataset, showing nested categories as colored arcs that can be clicked to zoom into sub-hierarchies. Built with D3 v5 and rendered as SVG, the visualization uses `d3.partition`, `d3.hierarchy`, and `d3.arc` to compute layout geometry, with `d3.scaleOrdinal` and `d3.interpolateRainbow` for color mapping. Clicking an arc triggers a smooth 750ms transition via `transition.attrTween` that interpolates angular and radial coordinates, while labels rotate and fade based on visibility thresholds. Ancestor tooltips appear via appended `title` elements.

AI-generated description

Mike Bostock's D3 Zoomable Sunburst example

<br></br> Ported from this Observable notebook for this forum thread. Many thanks to Bryan Gingechen who answered my question about the necessary steps to get from an (Observable) JavaScript notebook to a vanilla JavaScript index.html. He presented his solution on blockbuilder.org

MIT Licensed

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