{"version":"1.0","type":"rich","title":"Circles on a map","description":"This map visualization displays global population data for 2018 using circles sized by population magnitude and colored by data availability. The geographic map is rendered with D3’s `geoNaturalEarth1` projection and `geoPath`, while circle radii are scaled with `scaleSqrt`. The code uses TopoJSON world atlas data merged with CSV population figures. A size legend and a color legend are drawn as SVG elements, and zoom interaction is enabled via `d3.zoom`. Countries missing data appear red, while those with values are green.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/de0b602d67f041d0bd1627cefa0874d0?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}