{"version":"1.0","type":"rich","title":"World Countries Tree","description":"This interactive tree visualization displays the hierarchical structure of world countries organized by continent and subregion. The hierarchical data from data.json is transformed using the d3.tree and d3.hierarchy APIs, with SVG rendering through d3.select and d3.append. Nodes and connecting links are styled via CSS classes, and d3.zoom enables interactive panning and zooming of the canvas.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/831b8b12857a4856813a5ad3ee5c6212?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}