We started the RStudio project because we were excited and inspired by R. The creators of R provided a flexible and powerful foundation for statistical computing; then made it free and open so that it could be improved collaboratively and its benefits could be shared by the widest possible audience. It’s better for everyone if the 
Welcome to the RStudio weblog! We’ll use the weblog to talk about both the product and its features as well as broader issues that concern the R community.
John Chambers, the inventor of S, added reference classes to R 2.12, and oh boy are they fun to look at! What you see in the picture above is a “Hello World” web application for R. It’s written using the Rack R package (not unlike Ruby’s Rac...
I perform a precincts-votes analysis on the returns from the Chicago Democratic Mayoral primary of 2011.
Last night at the DC R Users meetup, which was our largest meetup to date, I gave an introductory presentation on data munging, and spent a bit of time on the split-apply-combine paradigm that I use almost daily in my work. I talked mainly about the packages plyr and doBy, which I use a lot 
I’ve been working on a long-term (25+yr) longitudinal study of rheumatoid arthritis with my boss. He just walked in and asked if I could create a plot showing the trajectory of pain scores over time for each subject, separated by educational level (4 groups). Having now worked with ggplot2 for a while, and learning more 
As previously announced, R 2.12.2 is available for download today. Browsing through the various mirrors (using the Download R tool on inside-R.org), it looks like the Windows version is already available on many mirrors; the Mac and Linux versions will follow soon (and of course, sources are available now). The complete list of changes is in the announcement on...
Here's a video tutorial I put together to go over how to generate a random sample from one of the commonly known parametric distributions in R.Along the way, I also discuss how some of the properties of estimators are reflected in the computations I pe...
Responding to yesterday's post which included an aside on using parallel processing for by-group computations in R, reader Christian Gunning mused about the possibility of using doSNOW on his network, with OpenSSH to manage the authentication: I sit on a fast campus network and have at least 10 remote cores available that I could farm out for big jobs....
Zero Inflated Models and Generalized Linear Mixed Models with R.
Zuur, Saveliev, Ieno (2012).
