Re: [R] Conversion of column matrix into a vector without duplicates

From: Dimitris Rizopoulos <dimitris.rizopoulos_at_med.kuleuven.be>
Date: Wed 24 Jan 2007 - 13:26:29 GMT

you need: unique(A[, 2])

Best,
Dimitris



Dimitris Rizopoulos
Ph.D. Student
Biostatistical Centre
School of Public Health
Catholic University of Leuven

Address: Kapucijnenvoer 35, Leuven, Belgium

Tel: +32/(0)16/336899
Fax: +32/(0)16/337015
Web: http://med.kuleuven.be/biostat/
     http://www.student.kuleuven.be/~m0390867/dimitris.htm


> Hi R,
>
>
>
> I have a matrix A,
>
>
>
> A=
>
> [,1] [,2]
>
> [1,] a u
>
> [2,] b v
>
> [3,] c x
>
> [4,] d x
>
> [5,] e x
>
>
>
> I want to put the 2nd column of this matrix in a vector without
> duplicates. i.e., my vector v should be (u, v, x), whose length is
> 3.
>
>
>
> Can anybody help me on this?
>
>
>
> Thanks in advance
>
> Shubha.
>
>
> [[alternative HTML version deleted]]
>
> ______________________________________________
> R-help@stat.math.ethz.ch mailing list
>
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> PLEASE do read the posting guide
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> and provide commented, minimal, self-contained, reproducible code.
>

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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. Received on Thu Jan 25 00:37:42 2007

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