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Fork of A9: D3 Choropleth Map

✓ Published0🌍 Public
NNita
Last edited May 1, 2025
Created on May 1, 2025

This interactive choropleth map visualizes county-level real estate metrics across New York, allowing users to compare median home prices or sales counts for 2022–2024 via dropdown menus. Hovering a county reveals its specific value in a tooltip. The visualization uses D3 v7 with `d3.geoPath` and `d3.geoAlbers` to project TopoJSON boundaries from the US Atlas, while `d3.scaleQuantile` drives a color legend. County colors transition smoothly between selections, and counties lacking data appear gray.

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MIT Licensed

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