Gregor Aisch and Larry Buchanan for the New York Times visualized Olympic medal dominance with a streamgraph for each event. Time is on the horizontal axis, and each stack represents a country. The greater the height is at any point, the more medals the country won that year. Nice labels, too.
Streamgraph of Olympic medal wins
Chart Type Used
10 Best Data Visualization Projects of 2017
It was a rough year, which brought about a lot of good work. Here are my favorite data visualization projects of the year.