Part 1 of 4 of a data visualization course in R with ggplot2 by the author himself, Hadley Wickham
Part 2: http://blip.tv/file/3375233
Part 3: http://blip.tv/file/3375426
Part 4: http://blip.tv/file/3375517
Short URL for this post: http://tmblr.co/ZPG7SyRyIcU
