[R-SIG-Mac] set.seed

[peter dalgaard]

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 using 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
> 
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> 
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-- 
Peter Dalgaard, Professor,
Center for Statistics, Copenhagen Business School
Solbjerg Plads 3, 2000 Frederiksberg, Denmark
Phone: (+45)38153501
Office: A 4.23
Email: pd.mes using cbs.dk  Priv: PDalgd using gmail.com