You need to set the set.seed yourself. There are some simulation where I do want the same numbers generated and can use the set.seed to set it to a know value. If you want something random each time, then use the time of day in the call to set.seed.
On Sat, Oct 9, 2010 at 5:14 PM, Liviu Andronic <landronim...@gmail.com> wrote: > Dear all > I'm using Xubuntu Lucid and I keep getting the same random numbers > whenever I start a new session of R. For example, I keep getting >> sample(1:1000, 1) > [1] 87 > > or >> rnorm(1:10) > [1] -1.3618103 0.4241701 1.0720076 0.2208145 -0.5375314 -0.4846588 > [7] 0.7576768 0.6527407 -0.6868786 0.8718527 > > I expected that some set.seed() instruction woudl be present in a > config file in > /usr/lib/R/etc/ > > but after grepping the only reference came out in Rprofile.site and it > was commented out: > # set.seed(1234) > > What else could be causing this? Regards > Liviu > >> sessionInfo() > R version 2.11.1 (2010-05-31) > x86_64-pc-linux-gnu > > locale: > [1] LC_CTYPE=en_US.UTF-8 LC_NUMERIC=C > [3] LC_TIME=en_US.UTF-8 LC_COLLATE=en_US.UTF-8 > [5] LC_MONETARY=C LC_MESSAGES=en_US.UTF-8 > [7] LC_PAPER=en_US.UTF-8 LC_NAME=C > [9] LC_ADDRESS=C LC_TELEPHONE=C > [11] LC_MEASUREMENT=en_US.UTF-8 LC_IDENTIFICATION=C > > attached base packages: > [1] stats graphics grDevices utils datasets methods base > > other attached packages: > [1] fortunes_1.4-0 sos_1.3-0 brew_1.0-3 IPSUR_1.1 > > > -- > Do you know how to read? > http://www.alienetworks.com/srtest.cfm > http://goodies.xfce.org/projects/applications/xfce4-dict#speed-reader > Do you know how to write? > http://garbl.home.comcast.net/~garbl/stylemanual/e.htm#e-mail > > ______________________________________________ > 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 code. > -- Jim Holtman Cincinnati, OH +1 513 646 9390 What is the problem that you are trying to solve? ______________________________________________ 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 code.
