set_seed - R-help | R Mailing Lists

Tue, Mar 7, 2000 10:19 AM #

Dear Sir,
   I would like to set seed in R before this command

for (i in 1:B)
 {boot.sample <- print(sample(x,replace=T))
}
...

for reason of stable of data output. How I do ?

Best Regards,
Nikom Thanomsieng
Department of Biostatistics & Demography,
Faculty of Public Health,
Khon Kaen University, Thailand.

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Thomas Lumley

Tue, Mar 7, 2000 10:28 AM #

On Wed, 8 Mar 2000, Nikom Thanomsieng wrote:

Use the set.seed function.

	-thomas


Thomas Lumley
Assistant Professor, Biostatistics
University of Washington, Seattle

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Brian Ripley

Tue, Mar 7, 2000 10:38 AM #

On Wed, 8 Mar 2000, Nikom Thanomsieng wrote:

[This is a list: there are a few hundred of us.]

If you have R 1.0.0 (or 0.99.0) use the function set.seed, as in
set.seed(54321). If not, we suggest you upgrade (although it can be done by
setting .Random.seed: see ?Random).

I am not sure what you are doing, but as it is often helpful not to
re-invent the wheel you might like to look at package boot.

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 272860 (secr)
Oxford OX1 3TG, UK                Fax:  +44 1865 272595

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Rick Bilonick

Tue, Mar 7, 2000 2:39 PM #

I need to merge several data.frames into one data.frame. In S-Plus  I would use
"merge" but I don't see a merge command in R. What is the best way to accomplish
this?

Thanks.

Rick Bilonick

--
Statistical Consulting for Business & Industry
mailto:rab at nauticom.net
efax:  508 445 5821
voice: 412 831 4509


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Ben Bolker

Tue, Mar 7, 2000 3:06 PM #

Upgrade to version 1.0.0.  (Aren't you glad it's free?)

from the NEWS file:

    o New functions by() and merge() to split and join data frames.

On Tue, 7 Mar 2000, Richard A. Bilonick wrote:

Ben Bolker                                  bolker at zoo.ufl.edu
Zoology Department, University of Florida   http://www.zoo.ufl.edu/bolker
318 Carr Hall/Box 118525                    tel: (352) 392-5697
Gainesville, FL 32611-8525                  fax: (352) 392-3704

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Peter Dalgaard

Wed, Mar 8, 2000 6:35 AM #

"Richard A. Bilonick" <rab at nauticom.net> writes:

*Everywhere?*

http://www.r-project.org/bin/linux/redhat/6.x/i386/R-base-1.0.0-1.i386.rpm

O__  ---- Peter Dalgaard             Blegdamsvej 3  
  c/ /'_ --- Dept. of Biostatistics     2200 Cph. N   
 (*) \(*) -- University of Copenhagen   Denmark      Ph: (+45) 35327918
~~~~~~~~~~ - (p.dalgaard at biostat.ku.dk)             FAX: (+45) 35327907
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Rick Bilonick

Wed, Mar 8, 2000 7:13 AM #

Ben Bolker wrote:

I would gladly upgrade to 1.0.0 if I could find an i386 RPM for it. I've searched
everywhere and can't find one. The closest I've come is R-base-0.99.0.4.i386.rpm.

Rick Bilonick

--
Statistical Consulting for Business & Industry
mailto:rab at nauticom.net
efax:  508 445 5821
voice: 412 831 4509



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