Try A[1,,drop=FALSE] - see help("\[")
--- On Mon, 13/7/09, Weiwei Shi <helprh...@gmail.com> wrote:
> From: Weiwei Shi <helprh...@gmail.com>
> Subject: [R] how to keep row name if there is only one row selected from a
> data frame
> To: "r-h...@stat.math.ethz.ch" <r-h...@stat.math.ethz.ch>
> Received: Monday, 13 July, 2009, 1:55 PM
> Hi, there:
>
> Assume I have a dataframe with rownames like A with
> rownames like a to e,
>
> > A
> [,1] [,2]
> a 1 6
> b 2 7
> c 3 8
> d 4 9
> e 5 10
>
> when I use A[1,], I lost the rowname for it, like below.
> How could I keep
> it? Is there an easy way instead that I have to modify by
> myself after I
> used A[1,] manually.
>
> > A[1,]
> [1] 1 6
>
> Thanks,
>
> W.
>
>
>
> --
> Weiwei Shi, Ph.D
> Research Scientist
> GeneGO, Inc.
>
> "Did you always know?"
> "No, I did not. But I believed..."
> ---Matrix III
>
> [[alternative HTML version deleted]]
>
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>
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