Circles on a map

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Circles on a map

✓ Published0🌍 Public

Last edited May 28, 2020

Created on May 28, 2020

This visualization displays total COVID-19 cases per country as of 16/05/2020, with semi-transparent red circles sized by case count using a square-root scale, overlaid on a natural Earth projection map. Countries lacking data appear in light red, while those with data are light gray. The map supports zooming via d3.zoom, and hovering reveals country names and exact case numbers. It uses topojson for world geography, d3.geoPath for rendering, and d3.scaleSqrt for circle sizing, with unemployment data sourced from a CSV. A custom size legend and color legend provide context.

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A bare minimum HTML page.

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