Remember those running maps I made with limited data from RunKeeper? Strava, which also provides an app to track your runs and bike rides, has a much more expansive version of popular paths around the world. Their dataset includes over 77 million rides and 19 million runs, summing to about 220 billion data points. Just pan and zoom to your area of interest, and there you go.
Where people bike and run, worldwide
Watching the growth of Walmart – now with 100% more Sam’s Club
The ever so popular Walmart growth map gets an update, and yes, it still looks like a wildfire. Sam’s Club follows soon after, although not nearly as vigorously.
Visualizing the Uncertainty in Data
Data is an abstraction, and it’s impossible to encapsulate everything it represents in real life. So there is uncertainty. Here are ways to visualize the uncertainty.
Real Chart Rules to Follow
There are rules—usually for specific chart types meant to be read in a specific way—that you shouldn’t break. When they are, everyone loses. This is that small handful.