Mountains on a Map

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Mountains on a Map

✓ Published6🌍 Public

Last edited Aug 7, 2020

Created on Jul 31, 2020

This visualization presents a world map where cities with populations over 50,000 are depicted as triangular mountains, with peak height encoding population size and fill color encoding country. The geographic base uses D3’s `geoNaturalEarth1` projection and `geoPath` for landmasses, graticules, and country interiors from TopoJSON world-atlas data. City data comes from Simplemaps and is rendered as SVG paths within React. The color scale is generated using D3’s `hcl` interpolation, and hover effects highlight individual mountains.

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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