inlin Yan posted a cool (hot?) simulation of burning fire with R in the COS forum yesterday, which was indeed a warm welcome. I’m not sure whether our forum members will be scared by the “fire” under the title “Welcome to COS Forum”. The fire was mainly created by ... [Read more...]

ag cloud is a bunch of words drawn in a graph with their sizes proportional to their frequency; it’s widely used in blogs to visualize tags. We can observe important words quickly from a tag cloud, as they often appear in large fontsize. Tony N. Brown asked how to “... [Read more...]

The annual GGobi hack-at-it was held June 5-7 in Ames Iowa. The main directions of work areDevelopment of a new canvas for R supporting interactive and dynamic graphics. Michael is leading the effort on this. Higher level routines for supporting brushi... [Read more...]

O’Reilly has published Data Mashups in R as a $4.99 PDF download in their Short Cut series. In 27 pages it takes you through an example of how to combine foreclosure information with maps and geographical information to produce plots like the one here. This is all done with the R ... [Read more...]

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Ever wonder how to finish your statistics homework real fast? Or you just want a quick way to verify your tedious calculations in your statistics class assignment. We provide an answer here by solving statistics exercises with R. read more [Read more...]

Just a little note for german speaking R beginners: There is an introductory course in R (german) available online on the website of the department of methodology and evaluation research at the University of Jena. Dr. Ivailo Partchev holds a seven sess... [Read more...]

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Zementis, in collaboration with Togaware, produced an article describing PMML and the PMML Package available for exporting predictive models built in R.The article is featured in the first edition of The R Journal. Check it out:PMML: An Open Standard f... [Read more...]

Some of the best figure design ideas come from cartographers. If you've ever read a Tufte book you've seen lots of examples. Let's talk about using color effectively. Penn State geography professor Cindy Brewer's ColorBrewer tool for selecting color schemes for figures has been conveniently packaged into an R library ... [Read more...]

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I don’t know how, but somehow, i stumbled on how to do this. I’ve always used emacs with ESS to run R, since spring 2006 (did it on windows, switched to linux, for years, and most recently, on my macbook). I liked this because i get the same usual ... [Read more...]

Hugh Miller, the team leader of the winner of the KDD Cup 2009 Slow Challenge (which we wrote about recently) kindly provides more information about how to win this public challenge using the R statistical computing and analysis platform on a laptop (!). [Read more...]