{"version":"1.0","type":"rich","title":"World Map with cities","description":"A world map visualization displays cities as semi-transparent circles, with circle area proportional to each city’s population. The map uses the Natural Earth projection via D3’s `geoNaturalEarth1` and `geoPath`, rendering graticules, land masses, and interiors from TopoJSON data. City coordinates and populations come from a CSV file, and the D3 `scaleSqrt` function maps population values to a maximum radius of 20 pixels.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/e74f432e0e44477494c4b51d5d1f8014?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}