{"version":"1.0","type":"rich","title":"Radial Tree of Countries Hierarchy","description":"This radial tree visualization displays the hierarchical structure of world countries, organized by continent and subregion. The graphic uses a circular layout where the root node \"World\" sits at the center, with continents, subregions, and individual countries radiating outward as labeled branches. The D3.js v4 code employs the `d3.cluster()` layout algorithm to position nodes in a radial pattern, with curved links connecting parent and child nodes. Interactive panning and zooming are implemented using `d3.zoom()`, while text labels are dynamically rotated and positioned based on node depth and angle. The visualization reads hierarchical data from a JSON file containing the UN country classification system.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/eff2b6e874b5437fa1e78c18917d925b?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}