{"version":"1.0","type":"rich","title":"World Countries Tree","description":"This visualization shows the hierarchical structure of world countries, organized by continent and subregion, as a tree diagram with horizontal links and labeled nodes. The layout uses the `d3.tree` and `d3.hierarchy` functions to compute node positions, while `d3.linkHorizontal` draws the connecting paths. Node labels are rendered as SVG text with font sizes scaled by depth, and the entire tree supports pan and zoom through `d3.zoom`. The data is loaded from a local JSON file via `d3.json`.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/5fed719646c84c528c9fb9b657da5b10?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}