How to Extract Data from Graphs & Why Women Usually Park Worse

Occasionally I see interesting graphs and wish I could access the underlying data. Often that’s because I want to check a statistical claim or because I want to make the plot nicer. Unfortunately, however, underlying data are rarely available. So, I was wondering: Can I extract the data from graphs directly? After some investigation, I found that I could, and that it requires three steps: Taking a screenshot, marking the data points and axes, and extracting these annotations programmatically.