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Last edited Mar 30, 2023

Created on Mar 30, 2023

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.

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