{"version":"1.0","type":"rich","title":"Points on a Map","description":"This visualization displays a world map with circles marking cities whose population exceeds 50,000, using the Natural Earth projection via `d3.geoNaturalEarth1` and `d3.geoPath`. The map includes graticules and country boundaries from World Atlas TopoJSON, with city data sourced from Simplemaps. Circle radii are scaled by population using `scaleSqrt`, rendered as semi-transparent SVG elements in React. The implementation leverages React hooks for data loading and D3 v5 for geographic projections and CSV parsing.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/1531af5e97e948909f767a66897d22bb?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}