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Fork of Sized Points on a Map
This example visualizes cities worldwide with populations exceeding 50,000, using point size to represent population magnitude. A natural Earth projection displays country boundaries and graticules, while semi-transparent teal circles overlay city locations. The visualization uses React components with D3's `geoNaturalEarth1` projection, `geoPath`, and `geoGraticule` for map rendering, and `scaleSqrt` for mapping population values to circle radii. City data originates from Simplemaps, and country boundaries come from the World Atlas TopoJSON source, rendered as SVG paths within a React application using d3.v5.
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.