
OK Dimitris,  you where right. 

Thank you.

Regards



> From: kurtney_84@hotmail.com
> To: d.rizopoulos@erasmusmc.nl
> Date: Wed, 28 Jan 2009 10:02:06 +0000
> CC: r-help@stat.math.ethz.ch
> Subject: Re: [R] Create a vector from matrix.
> 
> 
> 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.rizopoulos@erasmusmc.nl
> > To: kurtney_84@hotmail.com
> > CC: r-help@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
> > > 
> > > 
> > > 
> > > _________________________________________________________________
> > > 
> > > 
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> > > 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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> 

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