That's the effect of RNGkind(sample.kind="Rejection") which is the new default. Unfortunately, the older and buggy "Rounding" has a tendency to linger in saved workspaces.
-pd > RNGkind(sample.kind="Rejection") > set.seed(12) > sample(letters[1:10]) [1] "b" "g" "c" "f" "e" "i" "d" "j" "h" "a" > RNGkind(sample.kind="Rounding") Warning message: In RNGkind(sample.kind = "Rounding") : non-uniform 'Rounding' sampler used > set.seed(12) > sample(letters[1:10]) [1] "a" "h" "i" "b" "g" "j" "e" "f" "d" "c" > On 23 Jan 2020, at 09:51 , Adrian Dușa via R-SIG-Mac > <r-sig-mac@r-project.org> wrote: > > Dear All, > > I've recently acquired a new MacBook, and while transferring my files and > settings I noticed something I did not expect: > > Old Mac: >> set.seed(12) >> sample(letters[1:10]) > [1] "a" "h" "i" "b" "g" "j" "e" "f" "d" "c" > > > New Mac: >> set.seed(12) >> sample(letters[1:10]) > [1] "b" "g" "c" "f" "e" "i" "d" "j" "h" "a" > > For numbers I don't see anything different, the examples from ?set.seed > producing the same results. Both R versions are the same (3.6.2) and both > computers run macOS Catalina 10.15.2. > > I would be grateful for any advice, > Adrian > > -- > Adrian Dusa > University of Bucharest > Romanian Social Data Archive > Soseaua Panduri nr. 90-92 > 050663 Bucharest sector 5 > Romania > https://adriandusa.eu > > [[alternative HTML version deleted]] > > _______________________________________________ > R-SIG-Mac mailing list > R-SIG-Mac@r-project.org > https://stat.ethz.ch/mailman/listinfo/r-sig-mac -- Peter Dalgaard, Professor, Center for Statistics, Copenhagen Business School Solbjerg Plads 3, 2000 Frederiksberg, Denmark Phone: (+45)38153501 Office: A 4.23 Email: pd....@cbs.dk Priv: pda...@gmail.com _______________________________________________ R-SIG-Mac mailing list R-SIG-Mac@r-project.org https://stat.ethz.ch/mailman/listinfo/r-sig-mac
