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Sized Points on a Map
This visualization displays a world map with points sized proportionally to city populations, showing cities with over 50,000 residents. It uses d3.geoNaturalEarth1 for projection and d3.geoPath for rendering country boundaries and graticules. City coordinates and populations come from a CSV loaded from Simplemaps, while country shapes use TopoJSON from World Atlas. The point radii are scaled with d3.scaleSqrt, and React manages component rendering.
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.