{"version":"1.0","type":"rich","title":"Fork of Choropleth with Histogram Brushing","description":"This fork of the D3 Choropleth example visualizes U.S. county unemployment rates from August 2016, with a brushable histogram below the map that filters highlighted counties. Brushing the histogram dims counties outside the selected rate range using a quantile color scale interpolated with d3.interpolateInferno. The map uses d3.geoPath with geoAlbersUsaTerritories projection and topojson-client for county boundaries. The implementation leverages d3-rosetta’s memoization helpers and d3.brushX for interactive filtering, with zoom support via d3.zoom.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/b9fd199d777f469f98f34491f6f92883?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}