{"version":"1.0","type":"rich","title":"World Countries Tree","description":"This interactive visualization presents a hierarchical tree of world countries, organized by continent and subregion, with the country names displayed as text at varying font sizes based on their depth. The D3 v5 code uses `d3.tree()` and `d3.hierarchy()` to compute the layout, while `d3.linkHorizontal()` generates curved connecting paths between parent and child nodes. Pan and zoom functionality is implemented through `d3.zoom()`, allowing users to explore the data loaded from a JSON file. The SVG rendering uses a green stroke for the links and a serif font for the labels.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/db02499efcf94952b5fb001ecfae7411?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}