{"version":"1.0","type":"rich","title":"Circles on a Map","description":"This visualization displays global population data for 2018, with each country represented by a circle whose area corresponds to population size. Pan and zoom interactions use d3.zoom. The map is rendered with d3.geoNaturalEarth1 and d3.geoPath, while circle radii are scaled by d3.scaleSqrt. Hovering reveals country names and population counts via SVG title elements. Data comes from a CSV joined with TopoJSON world atlas geometry, and a d3.scaleOrdinal color legend and size legend are included.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/ae88f41b7d5a455784142040515f877d?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}