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Massachusetts Chrolopleth map with interactive legend

✓ Published1🌍 Public
Wwenleicao
Last edited Oct 22, 2019
Created on Oct 22, 2019

This choropleth map shows Massachusetts town boundaries colored by county, with an interactive legend that highlights matching regions on hover. The visualization uses React with d3.v5, including `d3.geoAlbers` for projection and `d3.geoPath` for rendering SVG paths from TopoJSON data. A CSV file maps towns to counties, and the legend employs `d3.scaleOrdinal` with a custom `ColorLegend` component. Hovering a legend value dims non-matching towns via reduced opacity while brightening the selected county.

AI-generated description

This Map show county boundry of Massachusetts

MIT Licensed

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