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ICE-8 NIHA

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118121a1545
Last edited Oct 30, 2025
Created on Oct 30, 2025
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Two map examples show how D3.js renders geographic data with TopoJSON and custom projections. The world map uses `d3.geoNaturalEarth1` and a sequential blue color scale to encode population values from a CSV, overlaid with a graticule. The US map uses `d3.geoAlbersUsa` with state boundaries from `us-atlas@3`. Both use SVG paths via `d3.geoPath` and a fixed tooltip on hover.

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