For my graphic on emergency room visits over time and the other on…
Hadley Wickham
-
Emergency room data in R
-
Optimizing your R code
Hadley Wickham offers a detailed, practical guide to finding and removing the major…
-
Link
Visualising data with ggplot2
Hadley Wickham gives a two-hour video tutorial on how to use his ggplot2 package in R. I have limited experience with it, but a lot of people really like it and use the package exclusively for their visual analysis needs.