{"version":"1.0","type":"rich","title":"d3 + TopoJSON","description":"This example displays a map of U.S. counties rendered as SVG paths, with each county filled in light gray and outlined in white. Hovering over a county turns it red. The visualization loads a TopoJSON file from a GitHub gist, converts it to GeoJSON using the `topojson.feature` method, and draws the features with `d3.geo.path()` in D3 v3. The map uses the default projection provided by D3’s geographic path generator.","provider_name":"VizHub AI Studio","provider_url":"https://next.vizhub.com","html":"<iframe src=\"https://next.vizhub.com/viz/gist-410b4eb5cad61402c354afba67a878b8?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"1\"></iframe>","width":960,"height":500,"cache_age":3600}