Re: [Rd] set_seed

From: Tong Wang <wangtong_at_usc.edu>
Date: Mon, 14 May 2007 23:01:34 -0700

  In this case, how do I choose numbers to make sure set_seed(n1,n2) and set.seed(n) produce the same result ? I am asking because my C code worked correctly if I compile it to produce .exe file and ran it , but it gave strange results if it is compiled to .dll file and dynamically loaded into R and call with .C( ).

   To debug, I need to let them produce the same random number under two different situation so I can tell what is wrong in R.

   Thanks a lot.

> On Mon, 14 May 2007, Tong Wang wrote:
>
> > Hi, All:
>
> > It seemed set_seed is usable only when Rmath is used as a
> standalone
> > library, then what should I use when I need to link to R.dll.
>
> When you link to R.dll you are running R, so you can call
> set.seed() via
> eval or via do_setseed.
>
> --
> Brian D. Ripley, ripley_at_stats.ox.ac.uk
> Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/
> University of Oxford, Tel: +44 1865 272861 (self)
> 1 South Parks Road, +44 1865 272866 (PA)
> Oxford OX1 3TG, UK Fax: +44 1865 272595
>



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