{"version":"1.0","type":"rich","title":"World Countries Tree","description":"This interactive visualization depicts the hierarchical structure of Wikipedia categories and pages as a tree diagram. Nodes are colored on a gradient from white to purple based on a group value, and hovering reveals a node’s name and whether an English version exists. Built with D3 v5, it uses `d3.tree` and `d3.hierarchy` for layout, `d3.zoom` for panning, and SVG circles and paths for rendering. Data is loaded from a local `data.json` file.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/c25258f83fba4d778318480bb415b7f0?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}