similar to: solve matrix

Hello all, I would like to know how to call sas code in R. Since I simulate data in R and I need to use sas code (garch-t,egarch and gjr) to estimate it. I need to simulate 500 times with 2000 obs. How I can call that code in R.Also, how I can keep the parameters from the estimate. j=1:500 i=1:2000 sas code keep parameters. Best Appreciate, Luck

Dear R-helpers, I was wondering if anyone has or knows someone who might have an implementation of algorithm for estimating garcht-t, egarch and gjr models. I try to use Fseries but I don't know how to code these models. Thanks a million in advance, Sincerely, Nongluck

Full_Name: Ravi Varadhan Version: 2.8.1 OS: Windows Submission from: (NULL) (162.129.251.19) Inverting a matrix with solve(), but using LAPACK=TRUE, gives erroneous results: Here is an example: hilbert <- function(n) { i <- 1:n; 1 / outer(i - 1, i, "+") } h5 <- hilbert(5) hinv1 <- solve(qr(h5)) hinv2 <- solve(qr(h5, LAPACK=TRUE)) all.equal(hinv1, hinv2) #

hi all, Does anyone know which command to use for error function(erf)? Thanks

Hi R users I used the function line(x,y) and line(lowess(x,y)) to see the correlation between 2 variables (x,y). Here is my question: is there a way to ask R to tell me the equation of -this line : line(x,y) -this curve: line(lowess(x,y)) Best regards -- View this message in context: http://www.nabble.com/equation-of-a-line-or-curve-tp20628845p20628845.html Sent from the R help mailing list

I'm testing a FC5 machine for use in a student lab. R 2.3.1 is installed and seems to work fine. There is one peculiarity - the logins are authenticating to a server, and a "verbose" flag is set somewhere, leading to lots of spurious messages like this request done: ld 0xa227598 msgid 1 which may be confusing R. However, R CMD check seems to fail for packages with no

Hi, There is an object, ".Last.value" to which the result of the most recent evaluation is assigned. This is similar to "ans" in Matlab. In Matlab "ans" can be very useful and time-saving, but typing the larger R version is somewhat clunky and takes away from the usefulness. Is it possible to reassign '.Last.value' to something simpler, like

To R-helpers, R offers the polyroot function for solving mentioned equations iteratively. However, Dr Math and Mathworld (and other places) show in detail how to solve mentioned equations non-iteratively. Do implementations for R that are non-iterative and that solve mentioned equations exists? Regards, Mads Jeppe

It works! But Once I have the square root of this matrix, how do I convert it to a real (not imaginary) matrix which has the same property? Is that possible? Best, Simon >----Messaggio originale---- >Da: p.dalgaard at biostat.ku.dk >Data: 21-nov-2009 18.56 >A: "Charles C. Berry"<cberry at tajo.ucsd.edu> >Cc: "simona.racioppi at

Dear all, Is there any method in R to find all possible nonnegative integer solutions to the linear equation with unit coefficients as follow: X1+X2+...+Xk=N Thank you, Amin Zollanvari

Dear R-community My ODE problems looks as follows: (1) dA/dt = u*A - v*B (2) dB/dt = v*B - u*A where u is a constant, and v=k*t (k=constant, t=time) Does anybody knows a good function/procedure of solving? Should one involve the equation (3) dv/dt = k? Thanks for your support. -- Dominik Heinzmann Master of Science in Mathematics, EPFL Ph.D. student in Biostatistics Institute of Mathematics

Dear R-helpers, First of all I have nothing against the French language! But now my problem, yesterday I installed R 2.1.1 and I had to experience that my RGui is speaking French. My windows locals is French (Switzerland). I'm used to English and I want to reset my RGui to English. I was seeking for the solution in the archives, however not successfully. By the way the searchable archives

Hi everyone, Firstly, I'm sorry for the cross-post. I re-read the posting guide and it appears my question is more related to r-devel.... (i think :-) ) I downloaded the source code available at: http://cran.fhcrc.org/src/base/R-2/R-2.4.0.tar.gz to a linux machine (Linux 2.6.11-1.1369_FC4smp #1 SMP). I successfully configured and compiled it, which means I'm able to run it from the

Hi, # Example of my problem of saving pdf file graphics in R-2.6.0 > x<-1:10;y<-1:10 > plot(x,y,type="b") # attempting to save the plot as a *pdf file fails # and the following error meassge is shown. Error: Invalid font type In addition: Warning messages: 1: font family not found in PostScript font database 2: font family not found in PostScript font database >

Dear list, I wonder if somebody has succeeded in installing R on an eeePC (Xandros desktop). Searching via Rseek (term eeePC) and in eeePC forums (term Cran) left me without proper hits. Best wishes, Walter.

Hi WizaRds, I ran into trouble trying to install the "debug" package, which requires TCL/TK support. It seems like the tcltk package is not installed on my system. From: http://tolstoy.newcastle.edu.au/R/help/05/07/7993.html it seems that the tcltk is bundled with the base R distribution. I'm running R under linux: > version _ platform i686-pc-linux-gnu

Dear R-helpers Apologies for the basic question, but I just got stuck: I would like to write values from a vector into array cells with the same names > count[1:10] 10010 10014 10015 10017 10030 10080 10100 10230 10250 10280 0 0 0 0 0 1 1 0 2 0 >data[1:10,,1] [,1] [,2] [,3] [,4] [,5] 10010 NA NA NA NA NA 10014 NA NA NA

Full_Name: Robert King Version: 2.1.1 OS: Linux (debian stable, with backport R) Submission from: (NULL) (142.58.147.28) update.packages documentation (and code, from what I can make out) says: ask: logical indicating whether to ask user before packages are actually downloaded and installed, or the character string '"graphics"', which brings up a

Hello, I am struggling for some time now to estimate AR(1) process for commodity price time series. I did it in STATA but cannot get a result in R. The equation I want to estimate is: p(t)=a+b*p(t-1)+error Using STATA I get 0.92 for a, and 0.73 for b. Code that I use in R is: p<-matrix(data$p) # price at time t lp<-cbind(1,data$lp) # price at time t-1

> Date: Mon, 20 Feb 2006 16:43:55 -0600 > From: Aldi Kraja <aldi at wustl.edu> > > Hi, > Using package gclus in R, I have created some graphs that show the > trends within subgroups of data and correlations among 9 variables (v1-v9). > Being interested for more details on these data I have produced also the > var-covar matrices. > Question: From a pair of two