Thanks Dimitris,
But I wrote the example with letters just for you to understand the problem,
actually the elements of matrix and vector contains characters, numbers of
whatever. I need an algorithm to work in any case, whatever the elements are.
I am not sure If I explained myself, if not, tell me please.
Regards
Patricia
> Date: Wed, 28 Jan 2009 10:56:32 +0100
> From: d.rizopou...@erasmusmc.nl
> To: kurtney...@hotmail.com
> CC: r-h...@stat.math.ethz.ch
> Subject: Re: [R] Create a vector from matrix.
>
> try this:
>
> s1 <- letters[1:10]
> e <- LETTERS[1:10]
> q <- c("a","a","c","b","d","d","a","e","b","a")
>
> e[match(q, s1)]
>
>
> I hope it helps.
>
> Best,
> Dimitris
>
>
> patricia garcía gonzález wrote:
> > Hi all,
> >
> > I am trying to create a vector with the information contained in a
> > determined matrix. Let me explain myself. I have a vector like this:
> >
> > q <- c("a","a","c","b","d","d","a","e","b","a")
> >
> > And a matrix like:
> >
> > s1 <- c("a","b","c","d","e","f","g","h","i","j")
> > e <- c("A","B","C","D","E","F","G","H","I","J")
> > s <- cbind( e, s1 )
> >
> >
> > The matrix s contains the correspondences between vector q and e. And I
> > want a vector of elements of vector e, but in the order of q. The result
> > should be like:
> >
> > q <- c ("a","a","c","b","d","d","a","e","b","a")
> >
> > res<-c ("A","A","C","B","D","E","A","E","B","A")
> >
> > So I have to take the elements of vector e and make a matching with
> > elements in vector q. Any idea?Sorry If I didn't explain myself well.
> >
> > Thanks
> >
> > Patricia
> >
> >
> >
> > _________________________________________________________________
> >
> >
> > [[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.
> >
>
> --
> Dimitris Rizopoulos
> Assistant Professor
> Department of Biostatistics
> Erasmus Medical Center
>
> Address: PO Box 2040, 3000 CA Rotterdam, the Netherlands
> Tel: +31/(0)10/7043478
> Fax: +31/(0)10/7043014
>
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