search for: rvnorm

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2007 Aug 20
1
rv package, rvnorm function
...and Summarize Simulations in R" (July 4, 2007). I am using a Dell Precision 380n computer running Gentoo Linux and R 2.2.1 (the latest available through Gentoo's portage/emerge system). Everything worked well until I tried the following command (found on p. 2 of the document): beta <- rvnorm(mean=beta.hat, var=V.beta*sigma^2) That command produced the following error message: Error in .rvmvnorm(n = n, mean = mean, Sigma = var) : Invalid (non-numeric) covariance matrix Sigma Any suggestions for interpreting the error message or correcting the problem would be much appreciated....