{"version":"1.0","type":"rich","title":"Multiple datasets in 5.x","description":"A choropleth map of U.S. county unemployment rates, rendered in SVG with D3 v5. County data is loaded asynchronously from a TSV file alongside TopoJSON geometry using Promise.all, then joined and mapped to color. The map uses a threshold color scale with a blue scheme, and includes a legend with an axis showing the unemployment rate percentages. State boundaries are overlaid as white lines.","provider_name":"VizHub AI Studio","provider_url":"https://next.vizhub.com","html":"<iframe src=\"https://next.vizhub.com/viz/gist-658ddf11beffbef3d7859eeef7d06be5?mode=embed\" width=\"960\" height=\"600\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":600,"cache_age":3600}