{"version":"1.0","type":"rich","title":"Hello!","description":"This example uses a D3.js tree layout with horizontal links to display a hierarchical dataset of countries organized by continent and subregion. The visualization renders an indented tree where each node’s label is sized relative to its depth, with larger text for higher-level regions. The code employs `d3.hierarchy`, `d3.tree`, and `d3.linkHorizontal` to compute positions and draw the connecting paths, while the `zoom` API enables pan and zoom interactions on the SVG canvas. Styling includes a serif font and green strokes for the link paths.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/2072b3734c5b4f269b2b3b3503f8c882?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}