{"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 as a circle whose area encodes population using a square-root scale. The visualization uses d3’s geoNaturalEarth1 projection, geoPath, and geoGraticule to render country boundaries and graticules, while React manages the SVG scene. City coordinates and populations come from a Simplemaps World Cities CSV, and country boundaries derive from the World Atlas TopoJSON, styled with subtle gray fills and strokes.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/7395d2ce18984e738978e392fc07af19?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}