{"version":"1.0","type":"rich","title":"Sized Points on a Map","description":"A world map displays cities with populations over 50,000 as semi-transparent, sized circles, using a square-root scale to encode population values with circle radius. Natural Earth projection and geospatial paths render the sphere, graticules, landmasses, and country boundaries from TopoJSON data, styled in dark grays and greens. City coordinates come from a CSV dataset, projected via `d3.geoPath` to SVG circles, with React managing the component state and D3 utilities handling data loading and scaling.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/0746c5dce4ed4652aa2b14f46cc6d7c3?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}