{"version":"1.0","type":"rich","title":"World Countries Tree","description":"This data-visualization example displays a hierarchical tree of world countries, organized by continent and subregion, based on a nested JSON dataset. Rendering as an SVG, the tree layout uses D3 v5’s `tree()` and `hierarchy()` functions, with `linkHorizontal()` for connecting parent-child nodes. Interactive pan and zoom are enabled via d3’s `zoom()` behavior, while text labels display country names with font sizes that vary by depth, and links are styled with a teal stroke.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/347226ad3d644a1cb923a3f50e264ec3?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}