{"version":"1.0","type":"rich","title":"Sized Points on a Map","description":"This example renders a world map with circles sized by population for cities over 50,000 inhabitants, using a square-root scale to encode the data. The map is drawn with React and SVG, projecting geographic coordinates through D3’s `geoNaturalEarth1` and `geoPath`, with graticules and country boundaries from the World Atlas TopoJSON. City data comes from Simplemaps, and each point’s radius is determined by `scaleSqrt` mapping maximum population to a 15-pixel radius.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/6e458a678ea54adfb31f2a05ef30db61?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}