Testing out selecting neighboring geographic units. Uses TopoJSON’s topojson.neighbors(objects) function.
Hover to highlight a county and it’s neighboring counties. This lets you see how a county compares to its immediate neighbors for a given variable, here the 2014 unemployment rate.
Data sources: Unemployment data from U.S. Bureau of Labor Statistics. Shapefile from U.S. Census Bureau, cleaned up with QGIS, simplified with mapshaper.org. Color palette from ColorBrewer