This crashes R (sometimes): 1 2 f = function( 3 a = {x <- y <- z <- w <- t <- u <- 7} 4 ) environment() 5 6 for (i in 1:1000) { ...

This crashes R (sometimes): 1 2 f = function( 3 a = {x <- y <- z <- w <- t <- u <- 7} 4 ) environment() 5 6 for (i in 1:1000) { ...

Christian Gunning has a great example of using Rcpp to speed up a for loop in R. For his agent-based simulation, Christian needed to repeatedly call the rbinom function in a loop. (Unfortunately, you can't pass a vector to the size argument, which would have solved the problem.) Using the aaply function (from the plyr package) took about 38...

What if we want to extend the behavior of one item with another? Or, to put it another way, what if we want one item to be able to grab the functionality of another? It turns out we can (almost) get this behavior without modifying the item constructor at all. Here's how you do the grabbing:

Should the world of R Wikibooks require a precis on truncated distributions, marijuana prices, or an obtusely coded method to visualize orthogonal least squares (spoiler alert: dot products are easier!), I’m your man! I hereby release all of the content and code in the R stuff category under the cc-by-sa copyright license. You can do…

The June 2011 issue of The R Journal contains an article on the R package digitize (link to pdf) by Timothée Poisot. This might prove to be a handy tool if you occasionally find yourself needing to retrieve data points from figures in old articles for...

Today, the first issue of the third volume of The R Journal was published: http://journal.r-project.org/current.html. The R Journal intends to reach a wide audience and is one of the main communication media in the R community. Usually, two issues are published each year. This issue presents 10 interesting research articles especially introducing to new R

Dear All, The first issue of the third volume of The R Journal is now available at http://journal.r-project.org/current.html. Below are direct links to (most of) the articles: Volume 3/1, June 2011 Download complete issue Refereed articles may be downloaded individually using the links below. Table of Contents Editorial 3 Contributed Research Articles testthat:...

Yesterday, Hadley Wickham released his new package “devtools” at the CRAN repository. A great R package which supports the development process of R packages. R Packages are the fundamental unit of reproducible R code. The development of R packages is a complex topic and requires several additional tasks next to R programming. For example, you

e-mails with the latest R posts.

(You will not see this message again.)