[Erland] figured it was high time for digital maps to go nautical and built a tablet-like device to display charts while sailing. The Pi Chart is, of course, powered by a Raspberry Pi running a ...

A weekly dive into the data behind the news. Each Saturday, Opinion columnist Philip Bump makes and breaks down charts explaining the latest in economics, pop culture, politics and more.

You might say that reading a stock chart is a bit like learning how to read. It's a critical step in every investor and trader's journey. But, reading those charts can also be daunting.