{"version":"1.0","type":"rich","title":"World Countries Tree","description":"This example presents a hierarchical tree of world countries, organized by continent and region, using a horizontal layout with curved links. It visualizes geographic groupings from a local `data.json` file, with depth-based font sizing for region names versus country names. The implementation leverages D3 v5’s `tree()` layout, `hierarchy()`, and `linkHorizontal()` path generator, rendering as SVG. Pan and zoom interactions are enabled via `d3.zoom()`, while text styling uses CSS text-shadow for legibility.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/d8c8476a0bb2433fb2ec72cae2f9a023?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}