search for: liaw

...r person, > I don't how to compile it, but what I want is binary file for > Windows 2000 > so that I could continue to work on my data. Could you or > someone kindly make > it for me. I would appreciate a lot. > > Thanks for your time, Jean > > On Wed, 5 Jan 2005, Liaw, Andy wrote: > > > Date: Wed, 5 Jan 2005 13:04:33 -0500 > > From: "Liaw, Andy" <andy_liaw at merck.com> > > To: 'Qun Shi' <qunshi at cs.uchicago.edu>, R-help at stat.math.ethz.ch > > Subject: RE: [R] (no subject) > > > > Sources...

...> lsf.str()#- how do the functions look like which I am using? Error in exists(nam <- nms[i], envir = envir, mode = mode) : F used instead of FALSE Execution halted Looks like the same problem as before, but at a different place. Mandrake Linux 9.0 with gcc. Regards, Andy Andy I. Liaw, PhD Biometrics Research Phone: (732) 594-0820 Merck & Co., Inc. Fax: (732) 594-1565 P.O. Box 2000, RY84-16 Rahway, NJ 07065 mailto:andy_liaw@merck.com ------------------------------------------------------------------------------

...figure out how to strip the starting white spaces, other than something ugly like: > strsplit(sub("^ +", "", " a b c "), " +") [[1]] [1] "a" "b" "c" Can some kind soul point me to a simpler way? TIA!! Best, Andy Andy Liaw, PhD Biometrics Research PO Box 2000, RY33-300 Merck Research Labs Rahway, NJ 07065 andy_liaw <at> merck.com 732-594-0820

Hi all, I am trying to play around with the randomForest function for classification. I know its performance is great. I am currently using the default options. It has many options. How do I further tweak the options so that I can make its performance even better? What are the options that are mostly used? Thanks a lot! M [[alternative HTML version deleted]]

...ytest as just numeric vector. I thought I check for that in my code by testing for if (!all(levels(y) == levels(ytest))) stop(...) but levels() on a non-factor returns NULL, and the comparison ended up being logical(0). Since all(logical(0)) is TRUE, the error is not flagged. Best, Andy Andy Liaw, PhD Biometrics Research PO Box 2000, RY33-300 Merck Research Labs Rahway, NJ 07065 mailto:andy_liaw at merck.com 732-594-0820 ------------------------------------------------------------------------------ Notice: This e-mail message, together with any attachments,......

...I'm not familiar with gcj, but my initial reaction would be a > ln -s for the relevant compiler executable from /usr/java > into /usr/bin. > > -----Original Message----- > From: r-help-bounces at stat.math.ethz.ch > [mailto:r-help-bounces at stat.math.ethz.ch] On Behalf Of Liaw, Andy > Sent: 03 October 2006 19:40 > To: r-help > Subject: [R] how do I tell configure where to find Java? > > Dear R-help, > > I'm trying to build R-2.4.0 on our Opteron-based Scyld > cluster. The system has gcj (the GNU Java compiler, part of > GCC) stuff in /...

...ignment out of the condition? E.g., the following works: i <- 0 while(i < 5) { i <- i + 1 if(i < 3) next print(i) } Regards, Andy > -----Original Message----- > From: Luke Tierney [mailto:luke at nokomis.stat.umn.edu] > Sent: Tuesday, October 02, 2001 3:36 PM > To: Liaw, Andy > Cc: r-help (E-mail) > Subject: Re: problem with while loop with next (was RE: [R] file > connection, w hile, readLines and browser) > > > It does look like `next' does not work properly with while loops in > versions through 1.3.1. We did some reorganizing of loo...

...d -2.28013373 1.02522037 0.07728352 0.54321899 0.95742354 -1.68420455 What am I missing? [BTW, this is using the tip that Thomas Lumley posted about forming the group means. I've wanted to write a `tsweep' function that's sort of the cross of tapply() and sweep().] Best, Andy Liaw, PhD Biometrics Research PO Box 2000, RY33-300 Merck Research Labs Rahway, NJ 07065 mailto:andy_liaw at merck.com 732-594-0820

...="cc -64" F77="f77 -64" --with-tcltk=no --enable-R-shlib make check failed because NA + 0 gave NaN instead of NA. I've tried both 32- and 64-bit build, with and without --enable-R-shlib. The same symptom occur in all cases. Any pointer much appreciated. Best, Andy Andy Liaw, PhD Biometrics Research PO Box 2000, RY33-300 Merck Research Labs Rahway, NJ 07065 mailto:andy_liaw at merck.com <mailto:andy_liaw at merck.com> 732-594-0820 ------------------------------------------------------------------------------ Notice: This e-mail me...

...th noting that I have nearly twice as much RAM and HD on the OS X G4 as I have on the Pentium. So it's definitely a platform specific problem. What on earth does one do about that? It's not emergent, but whomever works on the R source would probably like to know. On 5/12/04 20:29, "Liaw, Andy" <andy_liaw at merck.com> wrote: > That's because I _attach()_ the .rda file you sent me, so that copy of > `USdata' is in search position 2. The subset statement makes a copy > containing the subset in the workspace (aka global environment). At the end > of...

Dear R-help: Has anyone tried using R on the the AMD Opteron in either 64- or 32-bit mode? If so, any good/bad experiences, comments, etc? We are considering getting this hardware, and would like to know if R can run smoothly on such a beast. Any comment much appreciated. Best, Andy Andy Liaw, PhD Biometrics Research PO Box 2000, RY33-300 Merck Research Labs Rahway, NJ 07065 mailto:andy_liaw at merck.com <mailto:andy_liaw at merck.com> 732-594-0820 ------------------------------------------------------------------------------ Notice: This e-mail mes...

...plot(1:10, type="l", lwd=5), it looks right on screen, but when printed out using the menu, it looks like the plot was made with lwd=1. I've had this problem for quite a while (at least since 1.3.x) and still present in 1.7.1. Has anyone else seen this, or just me? Best, Andy Andy Liaw, PhD Biometrics Research PO Box 2000, RY33-300 Merck Research Labs Rahway, NJ 07065 mailto:andy_liaw at merck.com <mailto:andy_liaw at merck.com> 732-594-0820 ------------------------------------------------------------------------------ Notice: This e-mail mess...

Dear R-help, Can some one tell me how to do the following (if it's possible)? Suppose I have a function like this: f <- function(x, y, ...) { ## some code g(x, y, ...) ## some more code } The problem is that g() may not understand everything that comes through in "...". Is there a way to delete some component of "..." and then pass it to g()? Here's

Sorry for the cross-post. Not sure where the problem is... A while back I posted an R function to R-help: cd <- function (dir = tclvalue(tkchooseDirectory()), saveOld = FALSE, loadNew = TRUE) { stopifnot(require(tcltk)) if (saveOld) save.image(compress = TRUE) setwd(dir) rm(list = ls(all = TRUE, envir = .GlobalEnv), envir = .GlobalEnv) if (loadNew &&

...does not find all the packages I downloaded. I put all files in the same temp directory, but Rinst only finds some of them. I have no problem installing the rest with WinZip, but if Rinst works it would be much easier (don't have to run WinZip 20+ times). Anyone have any idea? Regards, Andy Liaw Merck Biometrics Research Phone: (732) 594-0820 Fax: (732) 594-1565 mailto:andy_liaw at merck.com -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html Send "info", "help", or...

...class when objects of that class is accessed? One possibility is to auto-load the package if the appropriate method is found. Another possibility is to notify the user that a package contains the appropriate method and ask if it should be loaded. Can such a thing be done? Regards, Andy Andy I. Liaw, PhD Biometrics Research Phone: (732) 594-0820 Merck & Co., Inc. Fax: (732) 594-1565 P.O. Box 2000, RY84-16 Rahway, NJ 07065 mailto:andy_liaw at merck.com ------------------------------------------------------------------------------ Notice: This e-mail messa...

...n't have a choice, as the script didn't offer that option). Now when I run configure in R-2.4.0, it finds gcj, which is not what I want to use. Is there a way to tell configure where to look for Java? I tried configure --help but didn't see anything related to Java. Best, Andy Andy Liaw, PhD Biometrics Research PO Box 2000 RY33-300 Merck Research Labs Rahway, NJ 07065 andy_liaw(a)merck.com 732-594-0820 ------------------------------------------------------------------------------ Notice: This e-mail message, together with any attachments,...{{dropped}}

...i <- 0 and keep typing {i <- i + 1} < 5, it eventually evaluate to TRUE. So why does the while loop not work? (BTW, the same while loop runs as I expected in Splus 6.0.3 on WinNT.) Any hints? I'd really appreciate the help! Cheers, Andy > -----Original Message----- > From: Liaw, Andy [mailto:andy_liaw at merck.com] > Sent: Tuesday, October 02, 2001 10:30 AM > To: 'Robert Gentleman' > Cc: r-help (E-mail) > Subject: An example (was RE: [R] file connection, while, readLines and > bro wser) > > > Prof. Gentleman (and R-help), > > Here&...

...ght now, if I run: beorun --nolocal R I just get the R start-up message and back to the shell prompt. If I try bpsh 0 R I can get R started (but the R prompt does not appear) and do computations, but no access to an x11() device. I'd very much appreciate any pointer. Best, Andy Andy Liaw, PhD Biometrics Research PO Box 2000, RY33-300 Merck Research Labs Rahway, NJ 07065 andy_liaw <at> merck.com 732-594-0820

Hi All, In another thread Andy Liaw, who CRAN lists as locfit maintainer; said: <quote> From: "Liaw, Andy" <andy_liaw at merck.com> To: "Guy Green" <guygreen at netvigator.com>; <r-help at r-project.org> Subject: Re: Alternatives to linear regression with multiple variables Date: 22 Februar...