{"version":"1.0","type":"rich","title":"Untitled","description":"This example visualizes the hierarchical structure of world regions and countries using a force-directed radial tree layout. The visualization displays country names as text nodes, grouped by sub-regions and continents, with curved links connecting parent and child nodes. It uses D3.js with `d3.forceSimulation` to position nodes and a custom link generator for the curved paths. Data is loaded from a JSON file containing a nested hierarchy of geographical classifications, and the code applies a radial arrangement to organize the tree structure.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/4e7e0659845c45608447788ce2760787?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}