{"version":"1.0","type":"rich","title":"Sized Points on a Map","description":"A world map displays cities with populations exceeding 50,000, with each city represented by a semi-transparent circle whose radius encodes population size via a square-root scale. The visualization uses React for rendering SVG elements, with d3’s geoNaturalEarth1 projection and geoPath to draw land boundaries, country interiors, graticules, and the sphere. City coordinates are projected from latitude and longitude, while data comes from a CSV sourced from Simplemaps’ World Cities Database, processed through d3.csv. Topology for country boundaries is loaded via d3.json from World Atlas TopoJSON.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/191e209f0cf34d069565ce09920ad578?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}