Thanks, William. You read my mind. Cheers, Mike On Mon, Mar 18, 2013 at 4:00 PM, Jeff Newmiller <jdnew...@dcn.davis.ca.us>wrote:
> Your request is meaningless. The seed itself is effectively overwritten > each time a random number is requested. It is only the repeatability of the > sequence of random numbers following the set.seed call that is > reproducible. You can set the seed to something else, but there is always a > seed and it changes as numbers are requested. > --------------------------------------------------------------------------- > Jeff Newmiller The ..... ..... Go Live... > DCN:<jdnew...@dcn.davis.ca.us> Basics: ##.#. ##.#. Live > Go... > Live: OO#.. Dead: OO#.. Playing > Research Engineer (Solar/Batteries O.O#. #.O#. with > /Software/Embedded Controllers) .OO#. .OO#. rocks...1k > --------------------------------------------------------------------------- > Sent from my phone. Please excuse my brevity. > > C W <tmrs...@gmail.com> wrote: > > >Yes, I agree with you. I guess what I was really looking for is a > >function > >like UNset.seed()? > > > >By having set.seed(), I can have reproducible code. But what if I want > >to > >check my work against what's produced from set.seed(100)? > > > >I really want to escape from the shadow of set.seed(), can I unset it? > > > >On Mon, Mar 18, 2013 at 3:07 PM, Nordlund, Dan (DSHS/RDA) < > >nord...@dshs.wa.gov> wrote: > > > >> As I understand it, how R ��normally� does it is to use the system > >clock > >> to set the seed once per session, unless you use set.seed() to set a > >new > >> seed. You chose to set the seed to a different value. But from that > >point > >> on, the pseudo random number generation continues in the same way it > >> �normally� does. In your code below, each of your 100 histograms > >will be > >> different. If you then execute the for loop again (but not the > >> set.seed(100) statement), you will get a different set of histograms. > > The > >> only way you would be �confined to set.seed(100)� is if you keep > >resetting > >> the seed to 100. > >> > >> Dan > >> > >> Daniel J. Nordlund > >> Washington State Department of Social and Health Services > >> Planning, Performance, and Accountability > >> Research and Data Analysis Division > >> Olympia, WA 98504-5204 > >> > >> From: C W [mailto:tmrs...@gmail.com] > >> Sent: Monday, March 18, 2013 11:50 AM > >> To: Nordlund, Dan (DSHS/RDA) > >> Cc: r-help > >> Subject: Re: [R] How to stop set.seed() besides exiting out of R? > >> > >> set.seed(100) > >> for (i in 1:100){ > >> a <- rnorm(1000, mean=0, sd=1) > >> hist(a) > >> } > >> > >> #Now say, I want to simulate without being confined to set.seed(100), > >I > >> just want to get a simulation like how R "normally" does it. > >> > >> Mike > >> > >> On Mon, Mar 18, 2013 at 2:40 PM, Nordlund, Dan (DSHS/RDA) < > >> nord...@dshs.wa.gov<mailto:nord...@dshs.wa.gov>> wrote: > >> > -----Original Message----- > >> > From: > >r-help-boun...@r-project.org<mailto:r-help-boun...@r-project.org> > >> [mailto:r-help-bounces@r-<mailto:r-help-bounces@r-> > >> > project.org<http://project.org>] On Behalf Of C W > >> > Sent: Monday, March 18, 2013 11:27 AM > >> > To: r-help > >> > Subject: [R] How to stop set.seed() besides exiting out of R? > >> > > >> > Hi list, > >> > > >> > I am curious how to stop the set.seed(), I don't want the same > >repeated > >> > random number. I know I can set it to a different seed, but I > >don't > >> > want > >> > to go through the trouble of setting different seed every time. > >> > > >> > Thanks, > >> > Mike > >> > > >> Can you show us how you are using set.seed() that results in getting > >the > >> same sequence repeatedly? If you are doing simulations in a loop, > >then set > >> the seed once, outside the loop. Otherwise, I am not sure what you > >are > >> doing that causes problems. A reproducible example would really > >help. > >> > >> Dan > >> > >> Daniel J. Nordlund > >> Washington State Department of Social and Health Services > >> Planning, Performance, and Accountability > >> Research and Data Analysis Division > >> Olympia, WA 98504-5204 > >> > >> ______________________________________________ > >> R-help@r-project.org<mailto: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. > >> > >> > >> [[alternative HTML version deleted]] > >> > >> > >> ______________________________________________ > >> 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. > >> > >> > > > > [[alternative HTML version deleted]] > > > > > > > >------------------------------------------------------------------------ > > > >______________________________________________ > >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. > > [[alternative HTML version deleted]]
______________________________________________ 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.
