Thanks a lot for all your replies. This may be a bad question. But, for me I was improved by asking this question.
Thanks, Jian-Feng, 2011/4/28 David Winsemius <dwinsem...@comcast.net> > > On Apr 28, 2011, at 12:09 PM, Ravi Varadhan wrote: > > Surely you must be joking, Mr. Jianfeng. >> >> > Perhaps not joking and perhaps not with correct statistical specification. > > A truncated Normal could be simulated with: > > set.seed(567) > x <- rnorm(n=50000, m=1, sd=1) > xtrunc <- x[x>=0.2 & x <=0.8] > require(logspline) > plot(logspline(xtrunc, lbound=0.2, ubound=0.8, nknots=7)) > > -- > David. > > > ------------------------------------------------------- >> Ravi Varadhan, Ph.D. >> Assistant Professor, >> Division of Geriatric Medicine and Gerontology School of Medicine Johns >> Hopkins University >> >> Ph. (410) 502-2619 >> email: rvarad...@jhmi.edu >> >> >> -----Original Message----- >> From: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org] >> On Behalf Of Mao Jianfeng >> Sent: Thursday, April 28, 2011 12:02 PM >> To: r-help@r-project.org >> Subject: [R] how to generate a normal distribution with mean=1, min=0.2, >> max=0.8 >> >> Dear all, >> >> This is a simple probability problem. I want to know, How to generate a >> normal distribution with mean=1, min=0.2 and max=0.8? >> >> I know how the generate a normal distribution of mean = 1 and sd = 1 and >> with 500 data point. >> >> rnorm(n=500, m=1, sd=1) >> >> But, I am confusing with how to generate a normal distribution with >> expected >> min and max. I expect to hear your directions. >> >> Thanks in advance. >> >> Best, >> Jian-Feng, >> >> [[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. >> >> ______________________________________________ >> 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. >> > > David Winsemius, MD > West Hartford, CT > > -- Jian-Feng, Mao the Institute of Botany, Chinese Academy of Botany, [[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.
