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

[Gabor Grothendieck]

On 7/7/05, Briggs, Meredith M <Meredith.Briggs at 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")