Rd2roxygen: Convert Rd to roxygen documentation

December 1, 2010 | Yihui Xie

must admit that I have been tired of maintaining my R packages for a long time, and the main reason is I feel really uncomfortable with writing R documentations (Rd). The required structure of an R package mainly includes two directories R and man — the former for the R source ... [Read more...]

How to Start Using (pgf)Sweave in LyX in One Minute

October 30, 2010 | Yihui Xie

regor Gorjanc published an interesting article “Using Sweave with LyX” in R News in 2008, which (I believe) makes it much easier to use Sweave. I use command-line tools a lot every day, but I am still “GUI-addicted”. (I don’t want to comment more about Microsoft Word here.) LyX is ... [Read more...]

On the Gory Loops in R

October 17, 2010 | Yihui Xie

his blog post is mainly for Stat 579 students on the homework for week 7, since I received too many “gory” loops in the homework submissions and I think it would help a bit to write my thoughts on R loops for beginners. The immortal motto for newbies in programming is: If ... [Read more...]

formatR: farewell to ugly R code

April 13, 2010 | Yihui Xie

It is not uncommon to see messy R code which is almost not human-readable like this: # rotation of the word "Animation" # in a loop; change the angle and color # step by step for (i in 1:360) { # redraw the plot again and again plot(1,ann=FALSE,type="n",axes=FALSE) # rotate; use ... [Read more...]

50000 Revisions Committed to R

October 10, 2009 | Yihui Xie

oday Romain Francois posted an interesting topic in the R-help list, and you can read his blog post for more details: celebrating R commit #50000. 50000 is certainly not a small number; we do owe R core members a big “thank you” for their great efforts in this fantastic statistical language in ... [Read more...]

How to Import MS Excel Data into R

September 26, 2009 | Yihui Xie

s Sir Francis Bacon said, “Histories make men wise; poets witty; the mathematics subtile; natural philosophy deep; moral grave; logic and rhetoric able to contend.” And Windows stupid. He should have added the last sentence if he were a Windows user in this age. 1. Avoid Using M$ Excel A lot ... [Read more...]

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