similar to: Peter Dalgaard's book availability....

Dear R-users: Recently I found my simulation run into an apparently infinite loop. After a few days of tracing and chasing, I believe it is caused by the built-in unif_rand() and exp_rand() functions: unif_rand() can produce a value of 0 which causes the following part of exp_rand() running into an infinity loop u = unif_rand(); for (;;) { u += u; if (u > 1.0) break;

Hi, Suppose that I have a list where each component is a list of two matrices. I also have a vector of weights. How can I collapse my list of lists into a single list of two matrices where each matrix in the result is the weighted sum of the corresponding matrices. I could use a loop but this is a nested calculation so I was hoping there is a more efficient way to do this. To help clarify,

Just now I again had occasion to want nested describe lists in a documentation file. I found that the bug which I reported on 18 October, 2001 still persists. I checked on the bug report at the R web page, and found that the notes say ``Not a problem in R 1.4.0 (2001-12-08)''. Well, it's still a problem for me --- using R 1.4.1. (Details: platform sparc-sun-solaris2.7 arch

We're pleased to announce a one day course covering static and dynamic graphics using R, ggplot and GGobi. The course will be held just before the JSM, on Saturday, 28 July 2007, in Salt Lake City. The course will be presented by Dianne Cook and Hadley Wickham. In the course you will learn: * How to build presentation quality static graphics using the R package, ggplot. We will cover plot

Greetings: On a Sun Solaris 8 machine using the Sun Studio 11 compiler: taz$ ./configure LDFLAGS=-xarch=v9 CFLAGS='-xO3 -xarch=v9' CC=/opt/SUNWspro/bin/cc --prefix=/opt/openssh-4.3p1 --with-ssl-dir=/opt/openssl-0.9.8a --with-xauth=/usr/openwin/bin/xauth --with-default-path=/bin:/sbin:/usr/sbin:/usr/bin:/usr/local/bin:/usr/openwin/bin:/usr/dt/bin --without-zlib-version-check checking

so i am having this question what should i do if the give data file (.txt) has 4 columns, but different lengths? how can i read them in R? any idea for the following problem? Gas consumption (1000 cubic feet) was measured before and after insulation was put into a house. We are interested in looking at the effect of insulation on gas consumption. The average outside temperature (degrees celcius)

Hello all: Why arbitrage rarely works. Peter Dalgaard's "Introductory Statistics with R" sells on AMAZON U.S. website at USD 44.95 and on AMAZON U.K at GBP 21.00. At the current exchange rate, the U.K. price translates to USD 32.68, a 27% savings BUT for delivery: the U.S. AMAZON promises 6-10 days whereas in the U.K. 4-6 weeks is promised. At Springer http://www.springer.de the

Dear R-Help-List, are there any plans to organize a "useR" conference in 2005? Best, Roland +++++ This mail has been sent through the MPI for Demographic Rese...{{dropped}}

Dear R-Help-List, are there any plans to organize a "useR" conference in 2005? Best, Roland +++++ This mail has been sent through the MPI for Demographic Rese...{{dropped}}

This came on S-news The more direct test being sapply(c(a=1,b=2), names) Problem: R ("all" versions) behaves the same as S+5.1, which is wrong IMO. {since some might disagree, I didn't yet post to R-bugs ..} ------- Start of forwarded message ------- Date: Thu, 22 Jul 1999 23:14:57 -0230 From: "Paul Y. Peng" <ypeng@math.mun.ca> To: s-news

In this connection, note the following > a4 <- 4 > plotThis <- bquote(alpha==.(a), list(a=a4)) > do.call(plot, list(1:10, main=do.call(expression, c(plotThis)))) > do.call(plot, list(1:10, main=do.call(expression, plotThis))) Error in do.call(expression, plotThis) : second argument must be a list > ## Whereas plotThis has class "call", c(plotThis) has class

I see that some, but not all, releases provide a local link to the key used to generate the signature files, which makes it difficult for a script to use them to verify the signatures. Gcc solves this problem by including the following on their mirrors page ( https://gcc.gnu.org/mirrors.html): The archives there will be signed by one of the following GnuPG keys: - 1024D/745C015A 1999-11-09

Hi R users, I am still a relatively new R user migrated from S+. I wonder in R how do you handle one difference between R and S+. S+ saves objects as different files in .Data directory while R saves all objects in a big file .RData. In S+, I can start two S+ sessions from the same directory and work simultaneously as long as new objects in the two sessions are not in the same names. This is

There's now a page on lanyrd ("the social conference directory") for useR! 2012 in Nashville: http://lanyrd.com/2012/useR/ its basically a site for making social mini-networks for conferences, so people can post up links, share photos, list talks, etc. If people going sign up then it'll look a lot better than UseR! 2011, where only three people seemed to have attended - but

Hello all, There is currently a (very !) lively discussions happening around the web, surrounding the following topics: 1) Is R efficient? (scripting wise, and performance wise) 2) Should R be written from scratch? 3) What should be the license of R (if it was made a new)? Very serious people have taken part in the debates so far. I hope to let you know of the places I came by, so you might be

Dear All, I am desperately trying to find any R package that fits a mixture survival models also know as a cure models. This are survival model where the survival function is improper which also means that a fraction of subjects are expected not to expreience the event. A Huge literature has been developed for thes type of models but I couldn't find any R package that fits this type of

Dear R-list members, I would like to pose a question about the use and results of the glm() function for logistic regression calculations. The question is based on an example provided on p. 229 in P. Dalgaard, Introductory Statistics with R, 2nd. edition, Springer, 2008. By means of this example, I was trying to practice the different ways of entering data in glm(). In his book, Dalgaard

Greetings. I'm trying to determine whether to use rpart or randomForest for a classification tree. Has anybody tested efficacy formally? I've run both and the confusion matrix for rf beats rpart. I've looking at the rf help page and am unable to figure out how to extract the tree. But more than that I'm looking for a more comprehensive user's guide for randomForest including

The Statistical Computing and Graphics Award The ASA Sections of Statistical Computing and Statistical Graphics have established the Statistical Computing and Graphics Award to recognize an individual or team for innovation in computing, software, or graphics that has had a great impact on statistical practice or research. Typically, awards are granted bi-annually. The prize carries with it a

Dear S-PLUS/R users: Do you know any default function or a user contributed function that can draw an ellipse with given axes and origin? Thanks for any help. Paul. -- Romance, like alcohol, should be enjoyed, but should not be allowed to become necessary. -- Edgar Friedenberg -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- r-help mailing list --