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Fork of fcc Choropleth

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NNita
Last edited Jan 4, 2024
Created on Jan 4, 2024
Forked from fcc Choropleth

A choropleth map of the United States displays the percentage of adults age 25 and older with a bachelor's degree or higher per county, using a four-color scale. Tooltips reveal the county name, state, and exact percentage on hover. The visualization uses d3.json to load TopoJSON county boundaries and education data, then renders them with d3.geoPath. Color encoding is assigned via a simple threshold function, while mouse events manage the tooltip. Data originates from the USDA Economic Research Service.

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freeCodeCamp D3 Choropleth project

MIT Licensed

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