{"version":"1.0","type":"rich","title":"Cities on World Map","description":"This example displays a world map with city populations overlaid as semi-transparent circles. Country boundaries appear as gray landmasses with interior borders, alongside graticules and a sphere outline. The visualization uses D3’s geoNaturalEarth1 projection and geoPath to render the map, with a sqrt scale mapping city population to circle radius. Data comes from a CSV of world cities and TopoJSON land geometry, rendered as SVG within a React framework.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/aa9f548f2b714e0f9797cc522356f1fa?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}