Mountains on a Map
A world map represents cities with populations over 50,000 as triangular "mountains" whose height encodes population and color encodes country. Built with React and D3 v5, it uses `geoNaturalEarth1` projection with `geoPath` for land, graticules, and borders. City positions derive from longitude and latitude through the projection, with hover tooltips revealing details. Data comes from the Simplemaps World Cities Database, while country boundaries use World Atlas TopoJSON.
AI-generated descriptionA world map showing cities with population greater than 50,000.
- Height represents population.
- Color represents country.
City data from Simplemaps: World Cities Database.
Country boundaries from World Atlas TopoJSON, polished for visual style, including graticules.
Colors inspired by UNHCR Streamgraph Explorer.
Technique inspired by New York Times: See How the Coronavirus Death Toll Grew Across the U.S..
Comments
Sign in to join the discussion.