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Sized Points on a Map
This example displays a world map with circles sized by city violent crime rates, using a square-root scale to encode the data. The map includes landmasses, graticules, and country borders rendered via `geoNaturalEarth1`, `geoPath`, and `geoGraticule` from D3 v5. City coordinates are projected from longitude and latitude to SVG circle positions. The visualization is built with React, loads data via `useWorldAtlas` and `useCities` hooks, and uses TopoJSON for country boundaries and CSV crime data.
AI-generated descriptionA 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.