{"version":"1.0","type":"rich","title":"Fork of World Countries Tree 002","description":"This example shows the hierarchical structure of world countries, organized by continent and subregion, as a vertical tree diagram. The visualization uses a D3 tree layout to compute node positions and renders paths with `d3.linkVertical` for connecting links. Text labels display country names with font sizes scaled by depth. The SVG rendering supports zooming and panning through the `d3.zoom` API. Data is loaded from a local JSON file using `d3.json`, and the code relies on D3 v5's `select`, `tree`, `hierarchy`, and `event` modules.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/e6690ed2bb69488c9787c7fba7f0dcf9?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}