{"version":"1.0","type":"rich","title":"World Countries Tree","description":"This example shows the hierarchical structure of world countries, grouped by continent and subregion, as an indented tree of text labels. The visualization uses a D3.js tree layout with hierarchical data, rendered as SVG. It employs `d3.hierarchy` to process the JSON data, `d3.tree` for layout, and `d3.linkHorizontal` to draw the connecting paths. Text labels display country and region names, with font size decreasing by depth, and the view is interactive via `d3.zoom` for panning and scaling.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/6ff6a3d8ac644baba5aaa9474dd253a4?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}