{"version":"1.0","type":"rich","title":"Circles on a Map","description":"A world map rendered with SVG paths uses proportional circles to visualize each country's 2018 population, with circle area scaled via `d3.scaleSqrt` and positioned by `d3.geoCentroid` under a `d3.geoNaturalEarth1` projection. The visualization supports pan and zoom through `d3.zoom`, and hovering over a country reveals its population in a tooltip. Missing-data countries appear in a lighter shade. A size legend built from `d3.scaleSqrt` ticks and a color legend accompany the map, with data loaded from a CSV and TopoJSON using `d3.csv` and `d3.json`.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/a6e9253bb78745d2a858b39dd5b4a131?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}