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Using Size with Points on a Map

✓ Published1🌍 Public
Jjwlam83
Last edited Jan 15, 2022
Created on Jan 15, 2022
Forked from Points on a Map

This example uses a natural Earth projection to render a world map with country boundaries and graticules, overlaid with circles representing cities with populations above 50,000. Circle size encodes population using a square root scale, with a maximum radius of 15 pixels. The visualization is built with React and D3 v5, employing `geoNaturalEarth1`, `geoPath`, and `geoGraticule` for the map, and `scaleSqrt` for sizing. City data comes from the Simplemaps World Cities Database, rendered as semi-transparent SVG circles.

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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