{"version":"1.0","type":"rich","title":"Upgraded Radial Tree of Countries Hierarchy","description":"A radial tree visualization displays the hierarchical organization of countries, grouped by continent and subregion, with leaves arranged around a central \"World\" node. D3.js v7 computes the layout using `d3.cluster`, projecting nodes onto a circular coordinate system. The SVG rendering uses `d3.zoom` for panning and scaling, with links drawn as curved paths and text labels rotated and anchored based on depth and angular position. The data comes from a local JSON file containing country and regional classifications.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/f73dc43521a24800bd55d5ff768596f6?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}