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VVickyLouise
Last edited Feb 16, 2018
Created on Feb 15, 2018

This choropleth map visualizes county-level unemployment rates across the United States. Each county is colored using a threshold scale with nine blue shades from the d3.schemeBlues palette, mapped to unemployment percentages between 1% and 10%. A horizontal color legend at the top of the SVG includes tick marks and labels for each threshold value. The map displays county boundaries with white state outlines for geographic context. County tooltips show the exact unemployment rate as a percentage. The data is loaded from an external TSV file, while county and state geometries come from TopoJSON.

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