Monthly Archives: February 2011

About the RStudio Project

February 27, 2011
By
About the RStudio Project

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

Read more »

Welcome to our Weblog

February 27, 2011
By
Welcome to our Weblog

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.

Read more »

John Chambers, the inventor of S, added reference classes to R…

February 26, 2011
By
John Chambers, the inventor of S, added reference classes to R…

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...

Read more »

More Chicago Mayoral Analaysis

February 26, 2011
By
More Chicago Mayoral Analaysis

I perform a precincts-votes analysis on the returns from the Chicago Democratic Mayoral primary of 2011.

Read more »

The split-apply-combine paradigm in R

February 25, 2011
By
The split-apply-combine paradigm in R

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

Read more »

ggplot2 joy

February 25, 2011
By
ggplot2 joy

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

Read more »

R 2.12.2 is available

February 25, 2011
By
R 2.12.2 is available

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...

Read more »

Tutorial on Distributions in R

February 25, 2011
By
Tutorial on Distributions in R

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...

Read more »

Mapping the 2011 Chicago Mayoral Democratic Primary

February 25, 2011
By
Mapping the 2011 Chicago Mayoral Democratic Primary

Mapping the Chicago Democratic Mayoral 2011 primary with Ruby, R, and ggplot2

Read more »

Setting up a parallel computing cluster for R with OpenSSH and doSNOW

February 25, 2011
By

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....

Read more »