Mountains on a Map

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Mountains on a Map

✓ Published0🌍 Public

Last edited Oct 15, 2020

Created on Oct 14, 2020

This visualization depicts a world map where each city with a population over 50,000 is represented as a small triangular "mountain" whose height encodes population size and whose color encodes the country. The map is rendered using React and D3’s `geoNaturalEarth1` projection with `geoPath`, including graticules and land boundaries from World Atlas TopoJSON. City data comes from Simplemaps, with tooltips displaying city name, country, and formatted population via `format`. Hovering increases stroke width on the mountain paths.

AI-generated description

A 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..

MIT Licensed

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