[R] precision of zero in R

hello, I have to calculate the determinants of near singular matrices. Presently R just stop at the precision of 2.16 e-16. Can some one tell me how can I set the precision of zero in R ? thanks chen pu __ R-help@stat.math.ethz.ch mailing list

Re: [R] Regression trees with an ordinal response variable

On Fri, 2 Feb 2007, Henric Nilsson (Public) wrote: Torsten, consider the following: ### ordinal regression mammoct - ctree(ME ~ ., data = mammoexp) Warning message: no admissible split found ### estimated class probabilities treeresponse(mammoct, newdata = mammoexp[1:5, ]) [[1]] [1]

Re: [R] Snow Package and R: Exported Variable Problem

Dear Robert, On 2/2/07, [EMAIL PROTECTED] [EMAIL PROTECTED] wrote: Hello and thanks in advance for your time. I've created a simulation on my cluster which uses a custom package developed by me for different functions and also the snow package. Right now I'm using LAM to communicate between

Re: [R] Access to column names stored in a vector in lm procedure

You can regress multiple dependent variables at once by placing them in a matrix. For example, this regresses each of the first 4 columns of the builtin iris dataset against Species, the last column: iris4 - as.matrix(iris[,-5]) summary(lm(iris4 ~ Species, iris)) On 2/2/07, [EMAIL PROTECTED]

[R] LyX 1.4.3-5 problem generating PDF documents

I just changed machines and, at first, could not get LyX 1.4.3-4 to even load. I tried 1.5 which loaded nicely but would not give me PDF output. Removed 1.5 tried using 1.4.3-5.exe. Result : On loading LyX : lyx: Disabling socket cont class std::basic_stringchar struct std:

Re: [R] precision of zero in R

On 2/3/07, pu chen [EMAIL PROTECTED] wrote: hello, I have to calculate the determinants of near singular matrices. Presently R just stop at the precision of 2.16 e-16. I'm not sure what you mean by that. Can you explain how you determined that number, perhaps including some code? It

[R] residual GLMM

Hi! can I effect a graphic analysis of the residual in GLMM? The data that I have are all of binary nature and I'm trying to eliminate the overdispersion with the GLMM. Thanks for attention. Eva -- Passa a Infostrada. ADSL e Telefono senza

[R] Installation Help

Hi, I am trying to install R on a linux machine. The output of running ./configure is == R is now configured for x86_64-unknown-linux-gnu Source directory: . Installation directory:/usr/local C compiler:gcc -g -O2 -std=gnu99

Re: [R] new incriminat

Hi, Vinagra - 3. 35 Vanlium - 1. 25 Cinalis - 3. 75 Amnbien - 2. 90 http://lodrx!com Important, Replace ! with . -- Oh yes, very easy to forget Myrtles dead, said Myrtle, gulping, looking at him out of swollen eyes. Nobody missed me even when I was alive. Took them hours and hours to find my

Re: [R] precision of zero in R

The Ryacas package can do exact arithmetic: http://code.google.com/p/ryacas/ See the vignette for examples. On 2/3/07, pu chen [EMAIL PROTECTED] wrote: hello, I have to calculate the determinants of near singular matrices. Presently R just stop at the precision of 2.16 e-16. Can some

Re: [R] Installation Help [Ignore]

Dear all, I just went around the error I got. For your record, in case someone encounter this again, the problem was in the zlib compression utility ( /usr/local/lib64/libz.a: could not read symbols: Bad value) which was not compiled in my machine using the -fPIC flag. It turns out that this

[R] futures, investment

Hi I am just starting to look at R and trading in futures, stock, etc Can anyone point me to useful background material? Stephen Choularton 02 2226 0413 545 182 -- 11:39 PM [[alternative HTML version deleted]]

Re: [R] Installation Help

You have an incompatible libz.a in /usr/local/lib64, without the corresponding libz.so. That is *not* the default on any 'linux machine' I have ever seen. Please remove it, and make sure you have the system shared libz installed. Also, why are you installing the obsolete R-2.4.0? On Sat, 3

Re: [R] multinomial logistic regression with equality constraints?

Hi Roger, Yes, multinomRob can handle equality constraints of this type---see the 'equality' option. But the function assumes that the outcomes are multinomial counts and it estimates overdispersed multinomial logistic models via MLE, a robust redescending-M estimator, and LQD which is another

Re: [R] reading very large files

On Sat, 2007-02-03 at 19:06 +0100, juli g. pausas wrote: Thank so much for your help and comments. The approach proposed by Jim Holtman was the simplest and fastest. The approach by Marc Schwartz also worked (after a very small modification). It is clear that a good knowledge of R save a

[R] JSS Volume 18 (www.jstatsoft.org)

Special Volume on Spectroscopy and Chemometrics in R Guest Edited by Katharine M. Mullen and Ivo H.M. van Stokkum 11 contributions, with software packages and examples Similar volumes on R in Psychometrics (guest edited by Jan de Leeuw) and R in Political Methodology (guest edited by Micah

[R] metapost output

Hi, I know the R can make eps output. But metapost sees to be an even better choice for me. I've been using gnuplot for a while, it seems it has excellent support with its metapost latex terminal. So I can insert any latex equation in the figure. Meanwhile, I can make the font in the figure will

Re: [R] CGIwithR

Yes, I already read it. I want to try those examples out. The question for bootstarpFile.html is: when I give several number , and press Submit Query. I didn't get any output. here is the location of my file [EMAIL PROTECTED] cgi-bin]# pwd /var/www/cgi-bin [EMAIL PROTECTED] cgi-bin]# ls -al

Re: [R] multinomial logistic regression with equality constraints?

By default, with print.level=0 or greater, the multinomRob program prints the maximum likelihood estimates with conventional standard errors before going on to compute the robust estimates. Walter Mebane Jasjeet Singh Sekhon writes: Hi Roger, Yes, multinomRob can handle equality

Re: [R] multinomial logistic regression with equality constraints?

Many thanks for pointing this out to me! I'm still a bit confused, however, as to how to use multinomRob. For example I tried to translate the following example using nnet: x1 - c(1,1,1,1,0,0,0,0,0,0,0,0) x2 - c(0,0,0,0,1,1,1,1,0,0,0,0) y - factor(c(a,b,b,c,a,b,c,c,a,a,b,c)) library(nnet) d -

Re: [R] multinomial logistic regression with equality constraints?

Roger, summary(multinomRob(list(y1 ~ x1 + x2,y2 ~ x1 + x2, y3 ~ 0),data=d, print.level=1)) Walter Mebane Roger Levy writes: Many thanks for pointing this out to me! I'm still a bit confused, however, as to how to use multinomRob. For example I tried to translate the following

[R] Announcing another R search engine

Hello all, I wanted to announce a new R search engine I made that covers all the major R mailing lists, CRAN, r-project.org, and more. Results are tabbed, so you can refine the search. Current refinements include searching just the mailing lists, searching just introductions, and searching the

Re: [R] Announcing another R search engine

Oh, I almost forgot: The search engine is at: http://www.rseek.org --Sasha On 2/3/07, Sasha Goodman [EMAIL PROTECTED] wrote: Hello all, I wanted to announce a new R search engine I made that covers all the major R mailing lists, CRAN, r-project.org, and more. Results are tabbed, so you

Re: [R] multinomial logistic regression with equality constraints?

Hi Roger, Walter's command is correct. To match the exact normalization used by nnet's multinom(), however, you would need to make the coefficients zero for the first class (i.e., y1) and not the last (i.e., y3). mr - multinomRob(list(y2 ~ x1 + x2, y3 ~ x1 + x2, y1~0),data=d, print.level=1)

[R] Fwd: Re: Calling C code from R

Hi! Thanks in advance. Thanks to all of you who have responded to me on above. This is one of the responses I received on above. I have installed perl (with path C:\Perl\bin\;) an MinGW (with path C:\MinGW\bin; C:\MinGW;). At the Command Prompt (C:\R-2.4.0\bin) I have