{"version":"1.0","type":"rich","title":"Sized Points on a Map","description":"This example visualizes global cities with populations over 50,000 using sized points on a natural Earth projection. City locations and population data come from a Simplemaps world cities CSV, while country boundaries are rendered from World Atlas TopoJSON. The React app uses `d3.geoNaturalEarth1` and `d3.geoPath` to draw graticules, landmasses, and interiors as SVG paths, then scales circle radii with `d3.scaleSqrt` based on population. Semi-transparent circles encode population density, creating a clear global distribution pattern.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/1b99352479364884ba78170c329d3704?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}