{"version":"1.0","type":"rich","title":"County Population Circles on US Map with D3.js!","description":"This example displays COVID-19 case counts as scaled circles overlaid on a map of US counties. The visualization uses `d3.geoAlbersUsa()` for projection, `d3.geoPath` to render state boundaries from TopoJSON, and `d3.scaleSqrt` to map case counts to circle radii based on data from a CSV file. County centroids, computed with `geoPath.centroid`, position the circles, while a `d3.zoom` handler enables panning and zooming.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/e48dd4804a3f4af5a53220f2998f4e42?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}