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Firefly Map of Coronavirus Case Locations

✓ Published2🌍 Public
Mmisferswift
Last edited Apr 6, 2020
Created on Apr 6, 2020

This interactive map displays the locations of confirmed Coronavirus cases as of March 5, 2020, with each point rendered as a glowing firefly-like sprite of uniform size and intensity regardless of case count. The visualization uses OpenLayers with React to manage the map and vector layers, while D3’s `cubehelix` function generates radial gradient sprites that combine a bright core with a soft Gaussian falloff. Data comes from the Johns Hopkins COVID-19 time-series CSV, filtered to include only locations with non-zero cases, and is projected onto a Stamen toner-lite basemap.

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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