{"version":"1.0","type":"rich","title":"World Countries Tree","description":"This example displays the hierarchical structure of world countries organized by continent and subregion, with country names rendered as nodes in a tree layout. The visualization uses D3 v5’s `tree` and `hierarchy` functions to compute node positions, `linkHorizontal` to draw curved connector paths, and SVG elements for rendering. Text size scales with node depth, and the entire graphic supports zooming via the `d3.zoom` API. Data comes from `data.json`, which nests countries under regional groupings.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/5e1a29aac31d45148eaa39864777b29f?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}