{"version":"1.0","type":"rich","title":"(Fork) Sized Points on a Map","description":"This example displays a world map with circles sized according to city population, showing cities with over 50,000 residents. The visualization uses a natural Earth projection via `d3.geoNaturalEarth1` and renders geographic features with `d3.geoPath`, including graticules and country boundaries from World Atlas TopoJSON. City data comes from Simplemaps’ World Cities Database, and circle radii are scaled using `d3.scaleSqrt`. The React component structure, SVG rendering, and D3 v5 APIs are used to create the map.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/3a2edfd70f0b49bead50364f7cbf188d?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}