{"version":"1.0","type":"rich","title":"World Countries Tree","description":"This example shows a hierarchical tree of world countries organized by continent and subregion. The layout uses D3’s `tree()` and `hierarchy()` functions to compute node positions, with curved `linkHorizontal()` paths connecting parent and child nodes. Labels display each country’s full name, with font size decreasing by tree depth. The visualization supports pan and zoom through D3’s `zoom()` behavior, applied to a group element. Data comes from a static `data.json` file, and all rendering is done with SVG elements styled via external CSS.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/01ea113532564375a1dc36fb201e48dc?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}