Questons about R capabilities
Duncan Murdoch wrote:
On Tue, 06 May 2003 15:27:20 -0400, you wrote in message <seb7d46c.048 at healthsmtp.nycnet>: ...
2) I am also interested in sampling from a multivariate normal distribution. I see that R has a command mvrnorm, but when I try to use it, I get a message to the effect that the command is not recognized. Is there something I must do to enable this command, or is it not available in version 1.7?
When the help says "mvrnorm(MASS)", that means that the function is in the package called "MASS". You need to execute library(MASS) to get that function loaded onto the search path. You can see which packages are already there by executing search() Duncan Murdoch
You can also sample a multivariate normal distribution using rmvnorm from a contributed package "mvtnorm". Execute library(mvtnorm) before using it. Paul Peng