{"version":"1.0","type":"rich","title":"World Countries Tree","description":"This example visualizes the hierarchical structure of world countries, organized by continent and subregion, as a horizontal tree layout. It uses D3 v5’s `tree` and `hierarchy` functions to compute node positions and `linkHorizontal` to draw curved links between parent and child nodes. The visualization renders text labels for each region and country directly in an SVG element, with zooming enabled via the `zoom` event. Node positions are scaled by depth, making higher-level categories appear larger and more prominent.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/058f3ec9f2b9449e8754e76389e88126?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}