{"version":"1.0","type":"rich","title":"Sized Points on a Map","description":"A natural Earth projection displays world cities with populations over 50,000 as semi-transparent teal circles, sized by population using a square root scale that caps the radius at 15 pixels. The map uses d3.geoNaturalEarth1 and d3.geoPath to render land masses, country borders, and graticules, while React components load city data from a Simplemaps CSV and world topology from World Atlas Topojson. Circle positions are computed by projecting each city’s longitude and latitude, with SVG used for all rendering.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"","width":960,"height":500,"cache_age":3600}