{"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 red circles, with circle size scaled by population using a square-root scale. The map uses a natural Earth projection via `d3.geoNaturalEarth1` and `d3.geoPath`, rendering landmasses, country interiors, and graticules from World Atlas TopoJSON data. City coordinates and populations come from a Simplemaps CSV, processed with React hooks and D3’s `csv` loader, and the visualization is built with React and SVG.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/2f7a7a661a7242f8829ef7a2a585bb42?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}