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Fork of React & D3 Starter

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Ppvvaishnavi93@gmail.com
Last edited Apr 8, 2026
Created on Apr 8, 2026
Forked from React & D3 Starter

This example shows a world population map where individual countries are shaded with a blue sequential color scale, and hovering over a country reveals its name and population in millions via a tooltip. It renders a Natural Earth projection using `d3.geoPath` and `d3.geoNaturalEarth1`, with geographic data loaded from TopoJSON via `topojson.feature` and country names from a TSV file. The code uses `d3.scaleSequential` with `d3.interpolateBlues` to map population values to fill colors, and SVG paths for country boundaries.

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