Circles on a Map

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Circles on a Map

✓ Published0🌍 Public

Last edited Jul 21, 2019

Created on Jul 21, 2019

Circles on a Map visualizes country population for 2018 using sized circles positioned at each country’s centroid on a natural Earth projection. The visualization uses d3.geoPath to render the map and d3.geoCentroid to place the circles, with d3.scaleSqrt mapping population values to circle area. Users can pan and zoom via d3.zoom, and hover over countries to see pop-up tooltips with population details. Data comes from a UN population CSV and TopoJSON world atlas, loaded asynchronously via d3.csv and d3.json. A size legend is built with d3.scaleSqrt’s ticks.

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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