{"version":"1.0","type":"rich","title":"Points on a Map Using Size","description":"A world map displays cities as semi-transparent teal circles, with each circle’s radius scaled by the square root of the city’s population. The basemap is rendered using `d3.geoNaturalEarth1` and `d3.geoPath` from the D3 v7 library, with graticules and land interiors styled via CSS. City coordinates from a CSV file are projected and drawn as SVG circles, sized using D3’s scaleSqrt. The code integrates React for UI management and fetches topology data from the World Atlas TopoJSON.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/49200b5568ba4ea98d918385b509730c?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}