-------- Original-Nachricht -------- > Datum: Wed, 10 Aug 2011 09:38:38 -0400 > Von: Duncan Murdoch <murdoch.dun...@gmail.com> > An: Johannes Radinger <jradin...@gmx.at> > CC: r-help@r-project.org > Betreff: Re: [R] function runif in for loop
> On 10/08/2011 7:28 AM, Johannes Radinger wrote: > > Hello, > > > > I'd like to perform a regression using MCMCregress (MCMCpack). > > One variable therefore should be a function rather than a variable: > > > > I want to use X as an input and X should be defined as a random number > between to values. Therefore I want to use the function runif like: > > X<-(1, Xa, Xb) but it seems that runif doesn't allow to use vectors. > > So I think I've to calculate the new vector X by using a for loop. > > runif() does allow vectors. Assuming Xa and Xb are vectors of length n, > then > > X <- runif(n, Xa, Xb) Thank you very much, I just got confused with the n, as I wanted always only one value between Xa and Xb. So far my solution based on your suggestion is: X <- runif(length(Xa), Xa, Xb) /johannes > > will work. (Xa and Xb don't both have to be vectors; values will be > recycled as necessary.) > > Duncan Murdoch > > I tried "for (i in 1:length(lT)) T<-runif(1,lT,uT)" but that doesn't > work. > > What is the correct for-loop function to create this new > vector/variable? > > > > Can I use that function then as an input for MCMCregress? > > > > thank you > > > > Johannes > > > > -- > > > > ______________________________________________ > > 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.
