{"version":"1.0","type":"rich","title":"Using Size with Points on a Map","description":"This example uses a natural Earth projection to render a world map with country boundaries and graticules, overlaid with circles representing cities with populations above 50,000. Circle size encodes population using a square root scale, with a maximum radius of 15 pixels. The visualization is built with React and D3 v5, employing `geoNaturalEarth1`, `geoPath`, and `geoGraticule` for the map, and `scaleSqrt` for sizing. City data comes from the Simplemaps World Cities Database, rendered as semi-transparent SVG circles.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/63c52a16a9de41ac9b26bd235bbc5623?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}