{"version":"1.0","type":"rich","title":"Circles on a Map","description":"This visualization displays country populations on a natural Earth projection map, using circles sized by population and a color legend. It renders world geography with `d3.geoPath` and `geoNaturalEarth1`, while `scaleSqrt` maps population values to circle radii. The map is interactive through `d3.zoom`, and hover effects highlight countries. Population data comes from a CSV file, merged with topology from a TopoJSON world atlas, and the visualization uses SVG rendering with D3 v5.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/04430e4b3d0e4b349108d8f0214045fa?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}