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Choropleth with Multidimensional Filtering
A choropleth map of unemployment rates by U.S. county is linked to two interactive histograms, one for unemployment and one for educational attainment. Brushing a histogram filters the map to highlight counties within the selected range, while hovering over a county reveals its values in both histograms. The visualization uses D3’s `geoPath`, `scaleQuantile`, and `brushX` with data from the BLS and USDA.
AI-generated descriptionAn adaptation of the D3 Choropleth Example that uses vanilla JavaScript and adds a brushable histogram. Shows Unemployment rate by U.S. county, August 2016. Modified to add zooming, leveraging utilities from d3-rosetta.
MIT Licensed