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D3.js v4 Mapping Tutorial 1

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Aalteist
Last edited Jun 11, 2018
Created on Jun 11, 2018

This visualization demonstrates Kazakhstan’s administrative regions and major cities using a Mercator projection. It renders region boundaries as semi-transparent steelblue paths with hover effects, while city points scale by population using `path.pointRadius`. Regional labels appear via `d3.geoPath` centroids, with white halo text for readability. The code uses D3.js v4’s `geoMercator`, `geoPath`, and JSON loading for both the country’s GeoJSON boundaries and a separate cities dataset.

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