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I would also recommend running the notebook live- some of the interactivity/plots don't work via nbviewer.

> ggplot2 formally shifts to maintenance mode in favor of ggvis. https://twitter.com/dseverski/status/438083880248033280

Damn, haven't learned enough ggplot2 before it expires.

what did you use for making the slides? they look great!

I actually just used Keynote, with the free version of Novecento Sans: http://www.myfonts.com/fonts/synthview/novecento/