{"version":"1.0","type":"rich","title":"usa Tree","description":"This visualization shows a hierarchical tree of U.S. states and cities, with the USA at the root, three states (Florida, Texas, Virginia) as children, and their major cities as leaves. The code uses `d3.stratify()` to convert flat parent-child data into a hierarchy and `d3.tree()` to compute node positions. Circles represent each node, colored by depth via a `setGeneration` function, with animated SVG path links that transition from source to target positions and text labels displayed in yellow.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/8ec0a85719b24060b3f8df3fa2431814?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}