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Choropleth with Multidimensional Filtering

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Choropleth with Multidimensional Filtering

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CCurran Kelleher
Last edited Oct 9, 2025
Created on Aug 20, 2024

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 description

A rough PoC for multiple histograms linked to a choropleth map. Shows two metrics:

  • Unemployment rate by U.S. county, August 2016 from the BLS.
  • Educational attainment ("Percent of adults with a bachelor's degree or higher, 2018-22") from USDA Educational Attainment Dataset
MIT Licensed