{"version":"1.0","type":"rich","title":"Circles on a Map","description":"This visualization maps global population data by country, using circle areas scaled with `d3.scaleSqrt` to represent each nation’s population. The world map is rendered with the Natural Earth projection via `d3.geoPath`, and users can pan and zoom using `d3.zoom`. Hovering over a country reveals its name and population, while circles are positioned at geographic centroids computed with `d3.geoCentroid`. Data comes from a CSV file loaded and processed alongside TopoJSON world geometry.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/c1a2ca8e6c3e4c5db9637d5503299bac?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}