{"version":"1.0","type":"rich","title":"Radial Tree of Countries Hierarchy","description":"This radial tree visualization displays a hierarchical organization of countries grouped by continent and subregion, with each leaf node labeled and connected by curved paths from a central root. The D3 v4 code uses `d3.cluster` to compute the tree layout, `d3.hierarchy` to parse the JSON data, and SVG paths for the links. Text nodes vary in size based on depth, and a zoom behavior with panning is enabled via `d3.zoom`. The data comes from a local `data.json` file containing the country hierarchy.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/cd8c931beedd4369b0fbbb4035af9455?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}