{"version":"1.0","type":"rich","title":"Fork of Fork of Simple Bar Chart","description":"A hierarchical tree diagram displays brand-model relationships. The visualization shows a root \"Brands\" node branching into brand categories like OnePlus and Samsung, which further split into individual model names. The code uses `d3.rollup` to aggregate sample data into the tree structure, then applies `d3.tree()` and `d3.hierarchy()` to compute node positions. `d3.linkHorizontal()` draws curved links between nodes, while SVG circles and text labels render the hierarchy.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/faca4280fe3c4fdba4a9fcf2b950a156?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}