{"version":"1.0","type":"rich","title":"World Countries Hierarchy","description":"This example visualizes the hierarchical relationships between world regions, subregions, and countries using a tree layout. The code employs `d3.hierarchy`, `d3.tree`, and `d3.linkHorizontal` to compute and draw the node links as SVG paths. Text labels are positioned according to tree depth, with font size decreasing for deeper levels, and `d3.zoom` enables panning and zooming. The data structure in `data.json` organizes countries under continents and subregions, rendered with a white text shadow for readability.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/6edd8194da334b278af0de6b7f44a11e?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}