Well, I made a mistake - your lambda should be 400 and not 40!!!
--- On Thu, 18/9/08, Moshe Olshansky <[EMAIL PROTECTED]> wrote: > From: Moshe Olshansky <[EMAIL PROTECTED]> > Subject: Re: [R] help on sampling from the truncated normal/gamma > distribution on the far end (probability is very low) > To: r-help@r-project.org, "Daniel Davis" <[EMAIL PROTECTED]> > Received: Thursday, 18 September, 2008, 5:00 PM > Hi Sonia, > > If I did not make a mistake, the conditional distribution > of X given that X > 0 is very close to exponential > distribution with parameter lambda = 40, so you can sample > from this distribution. > > > --- On Mon, 15/9/08, Daniel Davis > <[EMAIL PROTECTED]> wrote: > > > From: Daniel Davis <[EMAIL PROTECTED]> > > Subject: [R] help on sampling from the truncated > normal/gamma distribution on the far end (probability is > very low) > > To: r-help@r-project.org > > Received: Monday, 15 September, 2008, 2:28 PM > > Hi, guys, > > > > I am trying to sample from a truncated normal/gamma > > distribution. > > But only the far end of the distribution (where the > > probability is very low) > > is left. e.g. > > > > mu = - 4; > > sigma = 0.1; > > The distribution is Normal(mu,sigma^2) truncated on > > [0,+Inf]; > > > > How can I get a sample? I tried to use inverse CDF > method, > > but got Inf as > > answers. Please help me out. > > > > Also, pls help me on the similar situation on gamma > > dist'n. > > > > > > Thanks, > > Sonia > > > > [[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. ______________________________________________ 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.
