{"version":"1.0","type":"rich","title":"Points on a Map III","description":"This visualization displays world cities as scaled circles on a natural Earth projection, with circle radius proportional to population using a sqrt scale. The map shows graticules, land masses, and country borders, with city points overlaid. Built with React and D3 v5, it uses d3.geoNaturalEarth1, d3.geoPath, and d3.geoGraticule to render geographic features, while d3.csv loads city data and d3.scaleSqrt maps population values to radii.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/90e975a8468b443fb661fffe0c71c784?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}