{"version":"1.0","type":"rich","title":"node tree of countries","description":"A node tree visualizes the hierarchical structure of countries, grouped by continent and subregion, with labels sized by depth. The data is loaded from `data.json` and processed with `d3.hierarchy` and `d3.tree`. Each link renders as a horizontal path via `d3.linkHorizontal`, while text labels use D3 selections. The SVG supports zooming through `d3.zoom`, and styling uses a Playfair Display font with white text shadows.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/66157628977141ff8373a2312e7cb3ee?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}