D3 v5 Zoomable Sunburst
This interactive zoomable sunburst visualizes the hierarchical structure of the Flare dataset, where each ring segment represents a node and its size corresponds to a value. Users can click on any segment to zoom in, revealing its children and re-centering the view, or click the central circle to zoom back out. Built with D3 v5, the visualization uses SVG for rendering and employs animated transitions via `transition.attrTween` to smoothly interpolate arc paths and labels as the view changes. The hierarchical data is processed using `d3.hierarchy`, `d3.partition`, and `d3.arc`, with colors assigned via a quantized rainbow interpolator.