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Firefly Map of Coronavirus Case Locations

✓ Published0🌍 Public
DDimanjan
Last edited Mar 31, 2020
Created on Mar 18, 2020

This map shows the global distribution of confirmed Coronavirus cases as of early March 2020, with each location rendered as a glowing firefly-like sprite. The visualization uses OpenLayers with a Stamen toner-lite basemap, and React manages the map lifecycle. Case locations are styled using a custom canvas-generated radial gradient sprite, created with d3’s cubehelix color functions to simulate a soft glow. Data comes from the Johns Hopkins CSSE COVID-19 time series, loaded via d3.csv. The map updates over time by cycling through the dataset’s date columns.

AI-generated description

Firefly Cartography with OpenLayers and React.

Each point on the map is a location for which there was at least one confirmed Coronavirus case as of 3/5/2020. Each location is shown as the same size and intensity, regardless of how many cases there were (this is a shortcoming of this visualization).

Data from Johns Hopkins: CSSEGISandData/COVID-19;

MIT Licensed

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