Re: [R] reverse order of matrix rows

From: Adaikalavan Ramasamy <ramasamy_at_cancer.org.uk>
Date: Tue 09 Aug 2005 - 10:04:59 EST

How about simply

        mat <- mat[ nrow(mat):1, ]

Regards, Adai

On Mon, 2005-08-08 at 19:44 -0400, Jean Eid wrote:
> sapply(nrow(matrix):1, function(x) matrix[x,])
>
>
>
> On Mon, 8 Aug 2005, Jake wrote:
>
> > Quick question: how can I reverse the order of the rows in a matrix?
> > i.e. make the last row first and the first row last, etc.?
> >
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>
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R-help@stat.math.ethz.ch mailing list
https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html Received on Tue Aug 09 10:10:18 2005

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