{"version":"1.0","type":"rich","title":"Radial Tree of Countries Hierarchy","description":"This radial tree visualization displays the hierarchical relationship of world countries, organized by continent and subregion, with the root node \"World\" at the center. The layout uses D3's `d3.cluster` to position nodes radially, and SVG paths connect parent and child nodes with curved links. Text labels show country and region names, with font sizes scaled according to depth using `d3.scaleSqrt`. Users can pan and zoom the entire visualization via `d3.zoom`, which applies an SVG transform to the containing group. Data is loaded from a local JSON file.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/b086cb4543ca4f26a3a9e461e3ad8e47?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}