similar to: command line R; readline history

I've installed R-2.9.2 (64 bit), unixODBC-2.2.14-p2 (64 bit) and RODBC_1.2-5 (64 bit) on a 64 bit Redhat Linux server (Red Hat Enterprise Linux Server release 5.4 (Tikanga), x86_64) release 2.6.18-164.2.1.el5. I've tested the ODBC drive via isql and the test was success: [yzhang@ROracleTest ~]$ isql -v DRTST yzhang test +---------------------------------------+ | Connected!

Hi all, I'd like to fit a multivariate regression with the variance of the error term porportional to the predictors, like the WLS in the univariate case. y_1~x_1+x_2 y_2~x_1+x_2 var(y_1)=x_1*sigma_1^2 var(y_2)=x_2*sigma_2^2 cov(y_1,y_2)=sqrt(x_1*x_2)*sigma_12^2 How can I specify this in R? Is there a corresponding function to the univariate specification lm(y~x,weights=x)??

Hi all, I am going to sample two variables from two exponential distributions, but I want to specify a covariance structure between these two variables. Is there any way to do it in R? Or is there a "Multivariate Exponential" thing corresponding to the multivariate normal? Thanks in advance. Sincerely, Yanwei Zhang Department of Actuarial Research and Modeling Munich Re America Tel:

Hi all, Assume I have a random vector with four variables, i.e. A=(a,b,c,d). I am able to get the covariance matrix of vector A, but how can I get the covariance matrix of vector B=(a,c,b,d) by manipulating the corresponding covariance matrix of A? Thanks. Sincerely, Yanwei Zhang Department of Actuarial Research and Modeling Munich Re America Tel: 609-275-2176 Email:

Hi all, I am running a bivariate regression with the following: p1=c(184,155,676,67,922,22,76,24,39) p2=c(1845,1483,2287,367,1693,488,435,1782,745) I1=c(1530,1505,2505,204,2285,269,1271,298,2023) I2=c(8238,6247,6150,2748,4361,5549,2657,3533,5415) R1=I1-p1 R2=I2-p2 x1=cbind(p1,R1) y1=cbind(p2,R2) fit1=lm(y1~-1+x1) summary(fit1) Response 2: Coefficients: Estimate Std. Error t value

Hi all, I got another VAR question here and really appreciate if somebody would help me out :) I have five time series, say A,B,C,D,E. My objective is to predict the series A using the rest, that is, B, C, D and E. A Vector Autoregression Model should work here. But first of all, I should select which series of B, C, D and E to be include in the VAR model, as well as the number of lags. I wonder

Hi all, I have n independent variables A_1, A_2, A_3,......,A_n, and each with known variances var(A_1), var(A_2),..., but unknown mean. How can I get the approximation of the variance of the product of the variables using numerical computation, i.e. var(A_1*A_2*A_3*.....*A_n)? Thanks. Sincerely, Yanwei Zhang Department of Actuarial Research and Modeling Munich Re America Tel: 609-275-2176

Hi all, I have a 4 by 4 matrix, and I want to switch row 2 and row 3 first, then switch column 2 and column 3. Is there an easy way to do it? The following is a tedious way to get what I want. But I wonder if there is a way to simplify this. > a=matrix(rnorm(16),4,4) > a [,1] [,2] [,3] [,4] [1,] 0.33833811 -0.9422273 -0.06181611 -1.8346134 [2,] -0.68167996

Hi all, I met with a problem about the weighted least square regression. 1. I simulated a Normal vector (sim1) with mean 425906 and standard deviation 40000. 2. I simulated a second Normal vector with conditional mean b1*sim1, where b1 is just a number I specified, and variance proportional to sim1. Precisely, the standard deviation is sqrt(sim1)*50. 3. Then I run a WLS regression without the

Hi all, Is there an easy way to do cumulative matrix multipliation in R? What's the syntex? Thanks. Sincerely, Yanwei Zhang Department of Actuarial Research and Modeling Munich Re America Tel: 609-275-2176 Email: yzhang@munichreamerica.com<mailto:yzhang@munichreamerica.com> [[alternative HTML version deleted]]

I am accessing my email account remotely so it seems to be acting strangely so I am not sure if this R question was received. I apologize if it was and thanks for any help you can provide. ----------------------------------------------------------------- Hi Everyone : As I mentioned earlier, I am taking a lot of Splus code and turning into R and I've run into another stumbling block that I

I'm using Surfer 8 (Golden Software) on Wine. It work excellent. I have one problem. In MS Windows CE fonts are avaiable, especially Arial CE and Thimes New Roman CE. But in Wine is only Arial and Thimes New Roman but not CE. In another apps Arial CE and Thimes New Roman CE are avaiable. I copied the fonts to c/windows/Fonts. Surfer is only in english program but it have CE fonts in MS

Full_Name: Russell Senior Version: 0.64.0 OS: linux-2.2.x Submission from: (NULL) (198.107.133.11) It appears that the GNU readline history size is limited to 50 entries. This is apparently occurring because R is not bothering to override the readline default value (from readline-4.0): ./history.c:59:#define DEFAULT_HISTORY_GROW_SIZE 50 It appears that it ought to be possible to override

Dear list, I have the following matrix. How can I make the following plot? 1. The x-axis has index 1:7, and the first column is plotted against index 1, second against 2, and so on. 2. I want the points from the left upper conner including the antidiagonal to be plotted with col=2, and the rest with col=3 [,1] [,2] [,3] [,4] [,5] [,6] [,7] [1,] 0.589 0.857 0.923 0.944 0.954 0.963

Hello! Ever since I used R on Windows (RGui) I am missing the ability to search the command history (Cntrl+R (reverse-search-history) in BASH, for example). Is there a particular reason for having this function disabled? Another feature would be word-wise delete (kill-word, backward-kill-word). Probably being able to use the Alt-key as Meta key for readline (instead of activating menu entries)

Hi, Obviously history() will only work with readline installed: so far I have not been able to find working advice for installing and enabling readline on MacOSX. > sessionInfo() R version 2.15.1 (2012-06-22) Platform: x86_64-apple-darwin9.8.0/x86_64 (64-bit) locale: [1] C attached base packages: [1] tools tcltk stats4 splines parallel datasets compiler [8] graphics

Full_Name: Cyril Humbert Version: 1.5.0 OS: linux Submission from: (NULL) (193.50.159.2) Hitting ^C breaks readline history (when R is stared in an xterm). xterm -e R ^C -> arrow key and history stop working. For example, up-arrow gives "^[[A". ldd ./R.bin [../..] libreadline.so.4.1 => /usr/lib/libreadline.so.4.1 (0x40020000) libncurses.so.5 =>

Hi I have a source file in Splus that fails in R as I am using the Splus function compare(). compare( ii * 1e9,f ) where ii is a single variable and f is a vector of length 146 R returns with no function error Can anyone inform me how I can do this in R thanks in advance Bob Kelly [[alternative HTML version deleted]]

### I got bit again by the same bugs I wrote about a year ago. ### The bugs are related to matrices and arrays of lists. ### 1. There is a clear inconsistency in how R handles two ### functionally equivalent statements. ### array() is able to take a list and create a matrix. ### matrix() is unable to create that matrix. > vector("list", 2) [[1]] NULL [[2]] NULL >

I've looked through the FAQ and can't find anything about this. I'm working on a Sun machine, running Solaris 2.7. I'm a new R-user; have been using Splus for millenia, and finally decided it was time I got going with R. So I downloaded R, installed it, fiddled about a bit, and found that command-line editing was absent. Scrounging through the documentation some more, I saw it