{"version":"1.0","type":"rich","title":"Circles on the Map","description":"This example displays a natural Earth projection world map where each country is filled with a light gray or pink color based on whether population data exists for 2020. Circles sized by population are placed at each country’s centroid using `geoCentroid` and scaled with `scaleSqrt`. The visualization uses `d3.geoPath` to render the map, `d3.zoom` for panning and zooming, and includes size and color legends built from reusable components. Data comes from UN population CSV files and TopoJSON world atlas geometry, processed with `topojson.feature`.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/e28860f756fa49deb8d77062174edfd8?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}