{"version":"1.0","type":"rich","title":"World Countries Tree","description":"This example displays a hierarchical tree of world countries organized by continent and subregion, rendered as an SVG visualization. The data is loaded from a JSON file using `d3.json()`, then processed through `d3.hierarchy()` and `d3.tree()` to compute the layout. Nodes are labeled with country names, with font size scaling by depth, and links are drawn using `d3.linkHorizontal()`. Pan and zoom interactions are implemented with `d3.zoom()`, while hover effects are omitted.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/5dcdee4d4d5d462e8474abe9d874a96d?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}