{"version":"1.0","type":"rich","title":"Fork of Circles on a Map","description":"This visualization displays global population for 2018 using proportional circles overlaid on a natural Earth map projection. Each circle is positioned at a country’s centroid, with area scaled by population via `d3.scaleSqrt`, while a separate color legend and size legend explain the encoding. The map is rendered as SVG using `d3.geoPath` and `geoNaturalEarth1`, with pan and zoom enabled through `d3.zoom`. Data combines a CSV of population figures with TopoJSON world geography, processed using `topojson.feature`.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/9d29a8d604ea42eba9cb5ecbed2c32c8?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}