{"version":"1.0","type":"rich","title":"Nested Donut Chart Example","description":"This example uses a hierarchical dataset of topics and subtopics to render a multi-level nested donut chart in SVG. The D3.js partition layout arranges arcs for each layer, with custom radius adjustments in the arc generator distinguishing depth levels; the outer month wheel uses a separate pie layout. Color fills vary per parent topic, while click handlers on each arc display names, and labels are positioned through a custom transform function.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/4fc4e595c62147f39d9dff9951f72a59?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}