{"version":"1.0","type":"rich","title":"Sized Points on a Map","description":"This example displays a world map with city points sized by population. It uses a Natural Earth projection via D3's `geoNaturalEarth1` and `geoPath` to render landmasses, graticules, and country interiors. The map’s cities, sourced from a Simplemaps database, are drawn as SVG circles with radii scaled by the square root of population using D3’s `scaleSqrt`. The visualization is built with React and D3, with styles for the land, sphere, and graticules defined in CSS, and data loaded asynchronously from external files.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"","width":960,"height":500,"cache_age":3600}