Re: how to generate random number in a specific range

["Dimitris Rizopoulos" <dimitrios.rizopoulos@student.kuleuven.ac.be>]

And if you want from truncated normal, try this:

rtnorm <- function(n, mu=0, sigma=1, A=-Inf, B=Inf){
   if(A>B) stop("\n B should be greater than A")
   mu+sigma*qnorm(runif(n, pnorm((A-mu)/sigma), pnorm((B-mu)/sigma)))
}

rtnorm(1000, mu=35, sigma=4, A=1, B=41)
hist(rtnorm(1000, mu=35, sigma=4, A=1, B=41))

Best,
Dimitris

----
Dimitris Rizopoulos
Ph.D. Student
Biostatistical Centre
School of Public Health
Catholic University of Leuven

Address: Kapucijnenvoer 35, Leuven, Belgium
Tel: +32/16/396887
Fax: +32/16/337015
Web: http://www.med.kuleuven.ac.be/biostat/
    http://www.student.kuleuven.ac.be/~m0390867/dimitris.htm


----- Original Message ----- 
From: "Shuxia Yu" <ysxzh@163.com>
To: <s-news@lists.biostat.wustl.edu>
Sent: Friday, September 24, 2004 4:41 PM
Subject: [S] how to generate random number in a specific range


> Dear all,
>
> Would someone here like to point me how to generate a series random 
> number in a given range, e.g., 1 to 41? rnorm can't give what I 
> wanted ...
> Thank you very much in advance!
>
> Best wishes,
> Jinsong
>
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