{"version":"1.0","type":"rich","title":"Fork of Radial Tree of Countries Hierarchy","description":"This radial tree visualizes the hierarchical relationships between world countries, grouped by continent and subregion. Using D3.js v4, it renders a circular cluster layout where nodes are positioned by angle and radius. The visualization reads a nested JSON file and uses `d3.cluster` to compute positions, `d3.hierarchy` to process the tree structure, and `d3.zoom` to enable panning and zooming interactions. The code uses `project()` for polar-to-Cartesian conversion and styles text with different font sizes and rotations based on depth.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/8978a124d39a46aeab1202a291a51208?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}