{"version":"1.0","type":"rich","title":"World Countries Tree","description":"This visualization displays the hierarchical structure of world countries, organized by continent and subregion. It presents a horizontal tree layout where each node represents a geographic area, from the top-level “World” node down to individual countries. The size of the text decreases with the node’s depth in the hierarchy, making higher-level categories more prominent.\n\nThe implementation uses D3.js version 5 with SVG rendering. It employs the `tree` layout algorithm, `hierarchy` for processing the JSON data, and `linkHorizontal` for generating connecting paths. The code also integrates zoom functionality through a custom `zoom` component that applies user interactions to the SVG group. Country data is sourced from the provided `data.json` file.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/516ab64a7b424e979d5b5609216bb7f3?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}