{"version":"1.0","type":"rich","title":"Sized Points on a Map","description":"This example displays a world map with circles sized by city population, using a square-root scale to encode the values. The visualization uses a Natural Earth projection via `geoNaturalEarth1` and renders landmasses, graticules, and interiors using `geoPath` and `geoGraticule`. City coordinates are projected from latitude and longitude, and the data comes from the Simplemaps World Cities Database. The React application leverages D3’s `csv` and `json` fetch methods, with SVG circles styled with a teal fill and partial opacity for a clean, polished look.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/6d59c948cdfb4d4ba654197aba624f0e?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}