On 2/8/2006 4:53 AM, Bjørn-Helge Mevik wrote: > Why don't you test it yourself? > > E.g., > > set.seed(42) > bob1 <- rnorm(1000,0,1) > set.seed(42) > bob2 <- rnorm(500,0,1) > bob3 <- rnorm(500,0,1) > identical(bob1, c(bob2, bob3)) > > I won't tell you the answer. :-)
This isn't really something that can be proved by a test. Perhaps the current implementation makes those equal only because 500 is even, or divisible by 5, or whatever... I think the intention is that those should be equal, but in a quick search I've been unable to find a documented guarantee of that. So I would take a defensive stance and assume that there may be conditions where c(rnorm(m), rnorm(n)) is not equal to rnorm(m+n). If someone can point out the document I missed, I'd appreciate it. Duncan Murdoch ______________________________________________ [email protected] mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
