It may be niche, but it's a big niche in a data-driven world.

I leave my biweekly gel manicure to the pros. I love watching the manicurists create tiny works of art on my nails, especially since it’s a skill I could never replicate at home. But a DIY pedicure?

This week we cover ggplot, the grammar of graphics. ggplot is complicated at first but the payoff is worth the effort. ggplot can be combined with other tools to create interactive visualizations. The ...

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