{"version":"1.0","type":"rich","title":"Fork of D3 Hierarchies - eg2","description":"This example shows a hierarchical tree visualization of movie data, grouped by distributor and genre, with the worldwide gross revenue aggregated for each group. The root hierarchy is built using `d3.rollup` and `d3.hierarchy`, then laid out with the `d3.tree` layout. Nodes are drawn as circles, connected by lines, with labels above and leaf counts below. The code uses D3 v7 APIs including `d3.sum`, `d3.select`, and `.join` to render the SVG elements.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/3c6e6fca70d748078e0f379f458eb202?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}