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Dear all, I am programming on the *variance ratio test*, according to Lo and MacKinlay, 1988. I am wondering if there has been some official codes written for that. Many thanks and regards, Huan Huang This message and any attachments...

Dear list, I have done the ridge regression. But it seems the function lm.ridge does not return the variance for the estimators. Does anyone know how I can work out the variance for the estimators (my matrix has factors...

Dear list My data frame has serious collinearity problem. I want to try the Incomplete Principal Component Regression, introduced by "Regression Analysis" by Rudolf j. Freund and William J. Wilson (1998). I wonder if I can find a function in...

Hi, dear R I am dealing with my dataset with strong collinearity. I want to use the Variance Decomposition (Variance Proportion) method. There is a process in SAS called PROC REG to do it. I wonder if I can find...

Dear R users, I want to retrieve "..." argument values within a function. Here is a small exmaple: myfunc <- function(x, ...) { if (hasArg(ylim)) a <- ylim plot(x, ...) } x <- rnorm(100) myfunc(x, ylim=c(-0.5, 0.5)) Error in...

Dear all, I am trying to use R within Excel 97. Seems the VBA with Excel 97 does not recognize function "InStrRev" (it gives error message when I try to launch RExcel Help, just the same as that it doesn...

Dear all I am fighting with contour plot. I have a continuous response and three factors. The formula argument in function contourplot() does not like the factors. What I got is really nonsense, loads of squares in the plot (exactly...

Hi With moc function (in moc library), I try to apply a mixture of 2 normal distribution for univariate data which has 2 peaks, however I found it came down to 1 normal distribution (weights became 1 and 0) and...

Dear all, By the old emails I was told that function constrOptim() is in package r-devel. But where I can find this package? Thanks a lot. Huan > Only one question: Can you constrain the minimization in the nlm > procedure...

hi Emkiba, try this: x <- matrix(1:12, 4, 3) y <- matrix(x, 12, 1) yy <- y[,1] regards, Huan Internet emkiba at gmx.de@stat.math.ethz.ch - 07/16/2003 03:24 PM Sent by: r-help-bounces...

plot(sort(tapply(first.anti.auth.sum,date,mean), partial=1), type="l", col="yellow",ylim=c(0,2.0)) par(new=TRUE) \\ par(xaxt='n') plot(sort(tapply(first.pro.auth.sum,date,mean), partial=1), type="l", col...

Hi everybody, I have trouble installing my own package under R 2.1.0 (it is fine under R 2.0.1). My OS is Windows NT. I installed my package 'mag' by using menu "Packages/Install package from local...

I sent this email yesterday and it didn't come out in the email list. I re-send it here: Hi everybody, I have trouble installing my own package under R 2.1.0 (it is fine under R 2...

Dear Rers, I have threes series, x, y, z and I want to fit a model z ~ x + y. First of all, I fit a lm. I found the residuals are correlated, by looking at the acf() and pacf(). Then...

Dear all, I try to fit least absolute deviation (LAD) regression with R. I couldn't find any command to carry out LAD. What I am doing now is using nlm() and setting the function argument to minimize the sum...

Dear R users, This is more a statistical question rather than an R question. I'd appreciate it if you can give me some suggestions. I have a sample of a time series (sample size 500, fat tail in density...

Full_Name: Huan Huang Version: 1.9.1 OS: Win NT Submission from: (NULL) (155.140.122.227) Traceback: Traceback (most recent call last): File "/scratch/local/app/mailman-sfs/2.1.5/scripts/driver", line 87, in run_main...

I was using png() last week and also found it was very slow. But if you try: win.metafile('C:/temp/filename.png', width = 9, height = 10) plot(rnorm(100)) dev.off() It will speed up quite a lot. But...

Dear Prof. Harrell and R list, I have done the variable clustering and summary scores. Thanks a lot for your kind help. But it hasn't solved the collinearity problem in my dataset. Afer the clustering and transcan, there is...

Full_Name: Huan Huang Version: OS: Submission from: (NULL) (155.140.122.227) Bug in Mailman version 2.1.4 We're sorry, we hit a bug! If you would like to help us identify the problem, please email a...