{"version":"1.0","type":"rich","title":"Sized Points on a Map","description":"This visualization displays the world’s most populous cities as semi-transparent points sized proportionally to their population using a square-root scale. A natural Earth projection renders landmasses, graticules, and country interiors via d3.geoPath. City data is loaded from a CSV using d3.csv, while geographic features come from the world-atlas TopoJSON, processed with topojson.feature and topojson.mesh. React components manage the SVG rendering.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/d2c0d8a35933468290ae83c1eddfdf31?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}