{"version":"1.0","type":"rich","title":"Fork of Sized Points on a Map","description":"This visualization presents a world map where each circle represents a city with a population exceeding 50,000, sourced from the Simplemaps World Cities Database. The circles’ radii are scaled using a square-root scale (`scaleSqrt`) based on population, with a maximum radius of 15 pixels. The map uses `d3.geoNaturalEarth1` and `d3.geoPath` to render country landmasses and interiors from World Atlas TopoJSON, plus graticules for a polished look. The visualization is built with React and SVG, loading data via custom `useWorldAtlas` and `useCities` hooks that fetch JSON and CSV respectively.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/6d0fae5171284ee6b79ba593015e1fd4?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}