{"version":"1.0","type":"rich","title":"Fork of Sized Points on a Map","description":"A world map displays cities with populations over 50,000 as semi-transparent circles, sized proportionally using a square-root scale. The map uses a natural Earth projection via d3.geoPath, with graticules and country boundaries rendered from World Atlas TopoJSON data. City coordinates and population figures come from Simplemaps, loaded as CSV. The visualization is built with React, d3.v5, and SVG, using hooks for data fetching and rendering marks.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/9811e106e3d84bb6bb572754c84b3471?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}