{"version":"1.0","type":"rich","title":"fresh block","description":"A choropleth map of the United States displays county-level unemployment rates. Each county is filled with a color from a sequential blue scale, mapping rates between 2% and 10% using `d3.scaleThreshold`. The map is rendered as SVG, with county boundaries drawn via `d3.geoPath` and state outlines as white lines. Data for each county is joined from a TSV file containing unemployment rates, and a horizontal color legend with tick marks shows the rate scale.","provider_name":"VizHub AI Studio","provider_url":"https://next.vizhub.com","html":"<iframe src=\"https://next.vizhub.com/viz/gist-85836455283b41f994baa21621d29cf9?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"1\"></iframe>","width":960,"height":500,"cache_age":3600}