{"version":"1.0","type":"rich","title":"Circles on a Map","description":"This example visualizes the population of each country using circle markers overlaid on a natural Earth projection map. The area of each circle is proportional to the country's population, allowing for quick comparison. Users can pan and zoom the map, and hovering over a country reveals its name and population, with missing data shown in red. The implementation uses `d3.geoPath` and `d3.geoNaturalEarth1` for the map projection, `d3.scaleSqrt` for sizing, and `d3.zoom` for interaction. Population data comes from a UN dataset, with map outlines from the VisionsCarto World Atlas.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/47d3cf2d2c25448e93740a3b5ed753ea?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}