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Sized Points on a Map

✓ Published0🌍 Public
GGiovanni Kaaijk
Last edited Dec 3, 2019
Created on Dec 3, 2019

This visualization shows a world map with cities as sized points, where each circle’s radius reflects population using a `scaleSqrt` in d3. It renders a natural Earth projection with `geoNaturalEarth1` and `geoPath` for country boundaries, interior borders, and graticules. City coordinates are projected from longitude and latitude, with population data loaded via `d3.csv` from a Simplemaps dataset. The React-based code uses reusable `Marks` components, while SVG circles are semi-transparent to reveal overlapping urban areas.

AI-generated description

A world map showing cities with population greater than 50,000. City data from Simplemaps: World Cities Database.

Country boundaries from World Atlas TopoJSON, polished for visual style, including graticules.

MIT Licensed

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