Re: [R] How do you sort a data frame on a selection of columns?

From: Gabor Grothendieck <ggrothendieck_at_gmail.com>
Date: Fri 08 Jul 2005 - 10:22:58 EST

On 7/7/05, Briggs, Meredith M <Meredith.Briggs@team.telstra.com> wrote:
> This is what to start with:
>
> Data Frame A B C D
> c1 4 y 5
> c3 6 d 7
> c1 5 t 6
>
> Now sort on A then C
>
> This is what to end with:
>
> Data Frame A B C D
> c1 5 t 6
> c1 4 y 5
> c3 6 d 7
>

DF[order(DF$A, DF$C),]

There is also a function posted on r-help that can do this easier. Try

RSiteSearch("sort.data.frame")



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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 Received on Fri Jul 08 10:30:08 2005

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