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D3 v5 Zoomable Sunburst

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Aandrewomalley
Last edited Jan 9, 2020
Created on Jan 9, 2020

This zoomable sunburst visualizes the hierarchical structure of the Flare dataset, showing nested categories as concentric arcs. Clicking an arc zooms into that subtree, smoothly animating the radial layout over two seconds. Built with D3 v5, it uses `d3.partition`, `d3.hierarchy`, and `d3.arc` to compute geometry, while `d3.interpolate` and `transition.attrTween` animate the paths and labels. Color assignment uses `d3.scaleOrdinal` with `d3.interpolateRainbow`. The visualization renders as SVG, with tooltips displaying the full path and formatted values.

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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