Re: [R] Generate multivariate normal data with a random correlation matrix

to begin with, which doesn't seem to be the case. -Original Message- From: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org] On Behalf Of Szumiloski, John Sent: Wednesday, February 09, 2011 11:30 AM To: r-help@r-project.org Cc: Rick DeShon Subject: Re: [R

[R] Generate multivariate normal data with a random correlation matrix

Thanks in advance, Rick DeShon __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible

[R] Generate multivariate normal data with a random correlation matrix

)  # Sample the data Thanks in advance, Rick DeShon __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained

[R] nlsList {nlme} - control arguments problem

, parameters=c(min,dplt,dif,p)) Thanks for your help! Rick DeShon __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal

[R] replace zeros in a block diagonal matrix with small random values?

Hi All. Imagine you have a large block diagonal matrix. I'd like to replace the zeros in this matrix with small random (runif) numbers. Any ideas for a simple and efficient way to do this? Best regards, Rick DeShon __ R-help@r-project.org mailing

[R] NLS plinear question

of iterations to convergence: 11 Any idea why having a zero for the first value of X causes this problem? Thanks in advance, Rick DeShon [[alternative HTML version deleted]] __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help

[R] nlsList (nlme) error

... $ RT : int NA 1309 544 654 NA 441 882 1097 898 ... $ block: int 1 1 1 1 1 1 1 1 1 1 ... - attr(*, formula)=Class 'formula' length 3 RT ~ trial | id .. ..- attr(*, .Environment)=R_GlobalEnv - attr(*, FUN)=function (x) - attr(*, order.groups)= logi TRUE Thanks! Rick DeShon

[R] Efficient computation of average covariance matrix over a list

Hi All. I would like to compute a separate covariance matrix for a set of variables for each of the levels of a factor and then compute the average covariance matrix over the factor levels. I can loop through this computation but I need to perform the calculation for a large number of levels and

[R] Efficient computation of average covariance matrix over a list

matrix over the list members in lcov? Thanks in advance, Rick DeShon __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented