{"version":"1.0","type":"rich","title":"Untitled","description":"This zoomable treemap visualizes hierarchical data with interactive drill-down navigation. The chart renders rectangles sized by a primary measure, with a grandparent breadcrumb bar at the top for navigating back through levels. Hovering highlights child rects and displays a custom light-blue tooltip with additional metrics. The implementation uses `d3.hierarchy`, `d3.treemap`, and SVG animations, while the data is preprocessed through `d3.nest` to build the nested structure from flat records.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/101e92d0540243cc92b45647f1a7e2f7?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}