{"version":"1.0","type":"rich","title":"World Cities Population","description":"This visualization depicts global city populations on a natural Earth projection, where each city is a white circle scaled by population, with one pixel per 25,000 people. Hovering reveals city names and population counts. The code uses d3.geoNaturalEarth1, d3.geoPath, and d3.scaleSqrt to project and size the circles, while d3.zoom enables pan and zoom interaction. Data comes from the world-atlas TopoJSON for country outlines and a worldcities CSV file.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/e634f086244548f2b14394765e3aae30?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}