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Last edited Mar 9, 2023

Created on Jan 31, 2023

This example presents a choropleth map of global population by country, rendered as an SVG using D3.js v4. It employs a Mercator projection via `d3.geoMercator` and draws country boundaries with `d3.geoPath`. The fill color for each nation is determined by a threshold color scale that bins population values into a blue scheme from `d3.schemeBlues`. Data is loaded asynchronously with `d3.json` for the world GeoJSON topology and `d3.csv` for population figures.

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A bare minimum HTML page demonstrating use of CSS and JavaScript.

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