{"version":"1.0","type":"rich","title":"Points of a Map with Size","description":"A world map renders populated cities as translucent circles, with point size encoding each city’s population through a square-root scale. Using D3’s `geoNaturalEarth1` projection and `geoPath`, the map displays landmasses, graticules, and country borders, while React components load data via the `useWorldAtlas` and `useCities` hooks. City coordinates are projected and drawn as SVG circles, with population data sourced from a CSV file and geographic boundaries from TopoJSON.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/71401584d2e1480b8c6026f2f0d10066?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}