{"version":"1.0","type":"rich","title":"World Countries Tree","description":"This example shows a static tree visualization of world countries organized hierarchically by continent and subregion, with all leaf nodes displayed as country names. It uses the D3.js version 6 `tree` layout and `hierarchy` functions to compute the structure from a JSON file, then renders horizontal links with `linkHorizontal` paths in SVG. Text labels are positioned by node coordinates, with font size scaling by depth, and the entire view supports pan and zoom via `d3.zoom`.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/334ff3e9e5f64c9a9fea2418541045da?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}