At the most recent New York R User Group meetup, the topic was creating graphics in R with the ggplot2 package. Drew Conway's talk, "Making pretty pictures with ggplot2" gave several practical examples of visualizing data with ggplot2 and is well worth checking out:
You can follow along with Drew's slides, which are downloadable from his blog. (Update: you can now also watch the video and slides in sync -- thanks, Drew!.) You'll also find there video and slides of another talk, "Introduction to the Grammar of Graphics with ggplot2 in R" from Harlan Harris.
Zero Intelligence Agents: Visualizing Data with R and ggplot2 (Video)



Dave,
I literally JUST updated the post so that the slides and video are synced. You may want to update the above embed to the new VCASMO link here:
http://www.vcasmo.com/video/drewconway/7015
I am going to update Harlan's talk later today to include the slide sync as well (unless it causes me to go over my bandwidth allowance!), so I will ping you when that is up.
Feel free to delete this comment, and thanks for the link!
- Drew
Posted by: Drew Conway | December 28, 2009 at 09:35