Technology sector, share of market over time

Here’s a straightforward stacked area chart from the Economist that shows shifting market share in the technology sector. It highlights the quick shrinkage of IBM in the 1990s, Microsoft reign soon after, and the apple surge mid-2000s. Be sure to look at the nominal and real views too, because even though relative dominance shifted, the sector as a whole is up and up.

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10 Best Data Visualization Projects of 2015

These are my picks for the best of 2015. As usual, they could easily appear in a different order on a different day, and there are projects not on the list that were also excellent.

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.

Who is Older and Younger than You

Here’s a chart to show you how long you have until you start to feel your age.

Pizza Place Geography

Most of the major pizza chains are within a 5-mile radius of where I live, so I have my pick, …