{"version":"1.0","type":"rich","title":"node tree of countries","description":"This visualization shows a hierarchical tree of world countries, grouped by continent and subregion, with each node labeled with its geographic area name. The tree is generated from a JSON data structure using D3.js v5’s `d3.hierarchy` and `d3.tree` layouts, and rendered as SVG paths and text elements. Users can pan and zoom the diagram via `d3.zoom`. Node labels use varying font sizes that decrease with depth, and the layout uses `d3.linkHorizontal` for curved connector paths.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/71783f97938c4e11a9b88183ba3521a5?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}