{"version":"1.0","type":"rich","title":"Fork of Radial Tree of Countries Hierarchy","description":"This radial tree visualizes the hierarchical structure of world countries, organized by continent and subregion, using data from `data.json`. Built with D3 v4, it renders an SVG and supports panning and zooming via the `d3.zoom` interaction. The tree layout is computed using `d3.hierarchy` and `d3.cluster`, with links drawn as curved paths. Text labels use font sizes scaled by depth, and the layout is adapted from Curran Kelleher’s World Countries Hierarchy block.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/42dfbd9a9602486085179790e0404fac?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}