{"version":"1.0","type":"rich","title":"world countries","description":"This visualization displays a hierarchical tree of world countries, organized by continent and subregion, using a tidy tree layout that spreads nodes horizontally. It shows the geographic classification structure from the loaded `data.json` file, with country names rendered as text labels at varying font sizes based on depth. The implementation uses D3.js v5 APIs including `d3.json`, `d3.hierarchy`, `d3.tree`, and `d3.linkHorizontal` to compute and draw the tree paths as SVG elements. Pan and zoom interactions are enabled through `d3.zoom`, which applies transform updates to the main group element.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/05ae74c4cd954714855954ea8bead936?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}