{"version":"1.0","type":"rich","title":"World Countries Tree","description":"This interactive tree diagram visualizes the hierarchical structure of world countries, organized by continent and subregion. Using D3.js v5, the visualization employs a horizontal tree layout with SVG rendering. The code leverages D3's `tree`, `hierarchy`, and `linkHorizontal` APIs to compute the layout and generate connecting paths. User interaction is supported through D3's `zoom` event, which applies pan and zoom transformations to the entire group. Text labels display country names, with font size decreasing by depth level, while the data source is a JSON file containing the geographical hierarchy.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/d92e507f0deb4827a8a6ff0e595496e4?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}