Using data from Johns Hopkins University, Reddit user Edward-EFHIII created a heatmap that tracks the spread of COVID-19 across the world since late January. Starting in China's Hubei province on 23 January, and spreading to several European nations over the following eight weeks, the map demonstrates the speed at which new coronavirus cases have been appearing on a daily basis.
Posting in the r/dataisbeautiful subreddit, Edward-EFHIII commented:
"Every purple dot is a single confirmed case, green is a recovery, and red is a death.
I made the video by writing a web-based program with P5.js and then rendered the video by recording with OBS.
The animation spreads out data for a single day evenly (randomly) throughout that day's time period, and in a cluster around the coordinates of the region it occurred in. I don't have the actual location of every single case, just the country, and state/province for the US, China and a few others."