{"version":"1.0","type":"rich","title":"World Countries Hierarchy","description":"This visualization displays a hierarchical tree of world countries, organized by continent and subregion, using a radial dendrogram layout. The D3.js code loads a JSON dataset and applies `d3.cluster()` and `d3.linkRadial()` to position nodes and draw curved links. Country names are rendered as rotated text labels, with font sizes scaled by tree depth via `d3.scaleSqrt()`. The visualization includes zoom and pan functionality through `d3.zoom()`, with styling applied via custom CSS for path strokes and text shadows. The rendering uses SVG elements within a fixed full-screen viewport.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/618706b0121c4a61819e971666465bf3?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}