{"version":"1.0","type":"rich","title":"Node-link world countries tree viz","description":"This visualization displays a hierarchical tree of world countries, organized by continent and subregion, with each country name rendered as a text label. The layout uses a left-to-right node-link tree structure, where parent nodes represent geographic groupings and leaf nodes represent individual countries. The code uses d3-hierarchy's `tree` and `hierarchy` functions to compute the layout, `linkHorizontal` to draw curved edges, and SVG text elements with depth-scaled font sizes. Data comes from a JSON file containing nested world country groupings, and zooming is enabled via d3.zoom.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/340f39c762684bc7997576f1abaaaf9a?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}