Date:         Tue, 11 Nov 2008 12:18:42 -0600
Reply-To:     Joe Matise <snoopy369@GMAIL.COM>
Sender:       "SAS(r) Discussion" <SAS-L@LISTSERV.UGA.EDU>
From:         Joe Matise <snoopy369@GMAIL.COM>
Subject:      Re: random number generator
Comments: To: "./ ADD NAME=Data _null_," <iebupdte@gmail.com>
In-Reply-To:  <ce1fb7450811111009l3238620av930d45e1c687d0ed@mail.gmail.com>
Content-Type: text/plain; charset=ISO-8859-1

I get the same result, by the way (WIN XP PRO)

NOTE: _N_=1 x=0.2438111604
NOTE: _N_=2 x=0.0894751135
NOTE: _N_=3 x=0.3831937143
NOTE: _N_=4 x=0.0979283946
NOTE: _N_=5 x=0.2575810865
NOTE: _N_=6 x=0.088249594
NOTE: _N_=7 x=0.0362996664
NOTE: _N_=8 x=0.1075859592
NOTE: _N_=9 x=0.4458283407
NOTE: _N_=10 x=0.1431246754

As far as I know, it works as NULL describes.

-Joe

On Tue, Nov 11, 2008 at 12:09 PM, ./ ADD NAME=Data _null_, <
iebupdte@gmail.com> wrote:

> As I understand it the function always returns the same numbers given
> the same seed.  The PSEUDO random part.  Below are two small sample
> one on UNIX the other WINDOWS.  That seems like pretty different
> computer to me.  You must have changed something else.  Can you show
> your work.
>
> UNIX:
>
> 8    data _null_;
> 9       do _n_ = 1 to 10;
> 10         x = ranuni(1234);
> 11         put 'NOTE: ' _n_= x=;
> 12         end;
> 13      run;
>
> NOTE: _N_=1 x=0.2438111604
> NOTE: _N_=2 x=0.0894751135
> NOTE: _N_=3 x=0.3831937143
> NOTE: _N_=4 x=0.0979283946
> NOTE: _N_=5 x=0.2575810865
> NOTE: _N_=6 x=0.088249594
> NOTE: _N_=7 x=0.0362996664
> NOTE: _N_=8 x=0.1075859592
> NOTE: _N_=9 x=0.4458283407
> NOTE: _N_=10 x=0.1431246754
>
> Windows:
> 1996  data _null_;
> 1997     do _n_ = 1 to 10;
> 1998        x = ranuni(1234);
> 1999        put 'NOTE: ' _n_= x=;
> 2000        end;
> 2001     run;
>
> NOTE: _N_=1 x=0.2438111604
> NOTE: _N_=2 x=0.0894751135
> NOTE: _N_=3 x=0.3831937143
> NOTE: _N_=4 x=0.0979283946
> NOTE: _N_=5 x=0.2575810865
> NOTE: _N_=6 x=0.088249594
> NOTE: _N_=7 x=0.0362996664
> NOTE: _N_=8 x=0.1075859592
> NOTE: _N_=9 x=0.4458283407
> NOTE: _N_=10 x=0.1431246754
>
>
>
> On 11/11/08, Hoover, Dale <DHoover@barclaycardus.com> wrote:
> > It was my impression that it did not matter what computer and the seed
> > should produce the same ordering of random numbers every time.  So in
> > fact only random based on the choice of a seed.  I used this previous
> > and it was used in a segmentation scheme based on a seed that would not
> > vary over time and hence the segmentation could be produced at any point
> > in the future.
> >
> > Could something else in the code have changes.  And more importantly do
> > you call set a dataset variable to this number.  Maybe the order of the
> > dataset record is different from run to run....
> >
> > Dale S. Hoover
> >
> >
> > -----Original Message-----
> > From: SAS(r) Discussion [mailto:SAS-L@LISTSERV.UGA.EDU] On Behalf Of J
> > Doyle
> > Sent: Tuesday, November 11, 2008 12:45 PM
> > To: SAS-L@LISTSERV.UGA.EDU
> > Subject: random number generator
> >
> > I generate some random numbers in a sas program,
> > randomi = ranuni(1234);
> >
> > using 1234 as the seed. Will the set of numbers differ if I run the
> > program on two different computers?  today, I can't seem to replicated
> > the
> > values from yesterday that I created on a different pc. That is the only
> > explanation I can come up with, and would like to verify.
> >
> > thank you
> >
> >
> >
> > Barclays             www.barclaycardus.com
> >
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