{"version":"1.0","type":"rich","title":"Fork of Tree","description":"This visualization presents a world hierarchy as a tree, mapping the root node “World” to four continents—Asia, Europe, Africa, and North America—with two countries as leaf nodes under each continent. Node circles are color-coded by depth: blue for the root, purple for continents, and green for countries, with a legend clarifying the mapping. Using D3 v7, the code employs `d3.tree` and `d3.hierarchy` to compute the layout, then renders horizontal links via `d3.linkHorizontal` and draws circles and labels directly on the SVG, with text placement depending on whether a node has children.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/f8869e5f7187487f8a8d0d0bc2c6b185?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}