{"version":"1.0","type":"rich","title":"Circles on a Map","description":"This map visualizes global population estimates for 2022, with each country represented by a circle sized by its population and positioned at its centroid. The visualization uses D3's `geoNaturalEarth1` projection and `geoPath` to render the map, while `scaleSqrt` scales the circle radii. A size legend and color legend, built with reusable D3 modules, explain the encoding. Population data comes from a UN CSV file, and the map uses TopoJSON from the VisionsCarto World Atlas.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/21d6dafec027421e9a9aa476b46305d0?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}