Choropleth population map

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Choropleth population map

✓ Published0🌍 Public

Last edited Apr 13, 2022

Created on Apr 11, 2022

A choropleth map of the United States displays 1990 county-level population estimates from a CSV file, with counties shaded from light beige to dark red based on population. The map uses a blue-to-red sequential color scale, and hovering over a state dims others, highlights the selected one with a black stroke, and shows a tooltip with the state name and its population value. Built with D3.js (d3.v3), the visualization uses `d3.csv` to load data, `d3.geo.path` to render geographic features from a TopoJSON file, and `d3.mouse` events to manage tooltip positioning.

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MIT Licensed

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