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Let's make a map with D3.js!

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Eezzep66
Last edited Nov 10, 2019
Created on Nov 9, 2019

This example shows a basic choropleth map of U.S. counties, rendered as solid maroon SVG paths with thin black borders. The visualization uses D3 v5’s `geoPath` and `geoMercator` to project TopoJSON county boundaries loaded from a FreeCodeCamp-hosted dataset. The map displays all counties at once without any interactivity or data-encoding choropleth coloring, serving primarily as a technical demonstration of projecting and drawing geographic features with D3 and TopoJSON.

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