according to ?.Random.seed, `Note' section, different R sessions give differen simulation results; maybe each time you start R you load a previously saved workspace, with an existing .Random.seed, i.e., check if the .Random.seed value is the same each time you start R.
I hope it helps. Best, Dimitris ---- Dimitris Rizopoulos Ph.D. Student Biostatistical Centre School of Public Health Catholic University of Leuven Address: Kapucijnenvoer 35, Leuven, Belgium Tel: +32/(0)16/336899 Fax: +32/(0)16/337015 Web: http://med.kuleuven.be/biostat/ http://www.student.kuleuven.be/~m0390867/dimitris.htm Quoting Carl <[EMAIL PROTECTED]>: > Hi All. > (This is probably an incredibly stupid question :)) > > I have just noticed that every time I start an R2.3 session and > request > a random number (say with rnorm) that I receive the same number. > AFAIK I > have not set a seed at any point. Returning to an older version of > R(v1.8) I get the behaviour that I have come to expect, where a new > seed > is automatically generated for each new session (actually it was a > student running bootstraps on multiple machines that has noticed > this). > > I am running R2.3 for windows on winXP pro, AMD Athlon 2400+. > > Thanks in advance and be gentle. > C > > <...retreats and waits for imminent admonishment...> > > -- > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > Dr. Carl Donovan > Research Fellow in Statistical Computing > Ph +44 1334 461802 > The Observatory > Buchanan Gardens > University of St Andrews > St Andrews > Fife > KY16 9LZ > Scotland > > ______________________________________________ > R-help@stat.math.ethz.ch mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide! > http://www.R-project.org/posting-guide.html > > Disclaimer: http://www.kuleuven.be/cwis/email_disclaimer.htm ______________________________________________ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
