Circles on a Map

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Circles on a Map

✓ Published0🌍 Public

Last edited Oct 15, 2019

Created on Oct 10, 2019

This example visualizes global population by country, with circle area encoding 2018 population values on a natural Earth projection. Users can pan and zoom the map, and hovering over countries reveals more details via tooltips. The visualization uses d3.geoPath for map rendering, d3.scaleSqrt for proportional circle sizing, and d3.zoom for interactive navigation. Data comes from a CSV file joined with TopoJSON world geometry, while d3.scaleOrdinal and size legends explain the visual encoding.

AI-generated description

Visualizing population by country using circles on a map! The area of each circle corresponds to the population of the country it represents. You can also pan & zoom, and hover over each country for more information.

MIT Licensed

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