{"version":"1.0","type":"rich","title":"World Countries Tree","description":"This example displays the hierarchical structure of world countries using a tidy tree layout, with continents as branches, subregions as intermediate nodes, and countries as leaf labels. The visualization uses `d3.tree` and `d3.hierarchy` to compute the layout, then renders horizontal links via `d3.linkHorizontal` and text labels within an SVG. Interactive pan and zoom are enabled through `d3.zoom`. The data.json file organizes countries by geographic subregion, and the font size of each label decreases with tree depth.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/555db993cba149ecb8957926fdd8cc50?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}