[R] Combinations with two part column
Sofyan Iyan
sofyan.iyan at gmail.com
Wed May 18 01:48:00 CEST 2005
Dear to Gabor Grothendieck and James Holtman,
Thank you for giving me so much of your time to solve my problem.
Many thanks and best regards,
Sofyan
On 5/17/05, Gabor Grothendieck <ggrothendieck at gmail.com> wrote:
> Try write.table:
>
> write.table(comb8.5[,1:5], sep = ",", row.names = FALSE, col.names = FALSE)
> write.table(comb8.5[,6:8], sep = ",", row.names = FALSE, col.names = FALSE)
>
>
> On 5/17/05, Sofyan Iyan <sofyan.iyan at gmail.com> wrote:
> > Thanks for you quick answer.
> > Could I extend my question?
> > How to make the result for each rows with comma ",";
> > > library(gtools)
> > > comb8.5 <- t(apply(combinations(8,5), 1, function(x) c(x,setdiff(1:8, x))))
> > > comb8.5[,1:5]
> > [,1] [,2] [,3] [,4] [,5]
> > [1,] 1 2 3 4 5
> > [2,] 1 2 3 4 6
> > [3,] 1 2 3 4 7
> > [4,] 1 2 3 4 8
> > [5,] 1 2 3 5 6
> > [6,] 1 2 3 5 7
> > ...
> >
> > I mean like:
> > 1, 2, 3, 4, 5
> > 1, 2, 3, 4, 6
> > 1, 2, 3, 4, 7
> > 1, 2, 3, 4, 8
> > 1, 2, 3, 5, 6
> > 1, 2, 3, 5, 7
> >
> > > comb8.5[,6:8]
> > [,1] [,2] [,3]
> > [1,] 6 7 8
> > [2,] 5 7 8
> > [3,] 5 6 8
> > [4,] 5 6 7
> > [5,] 4 7 8
> > [6,] 4 6 8
> > ...
> >
> > this below like:
> > 6, 7, 8
> > 5, 7, 8
> > 5, 6, 8
> > 5, 6, 7
> > 4, 7, 8
> > 4, 6, 8
> >
> > Best,
> > Sofyan
> >
> >
> > On 5/17/05, Gabor Grothendieck <ggrothendieck at gmail.com> wrote:
> > > On 5/17/05, Sofyan Iyan <sofyan.iyan at gmail.com> wrote:
> > > > Dear R-helpers,
> > > > I am a beginner using R.
> > > > This is the first question in this list.
> > > > My question, Is there possible to make combinations with two part column?
> > > > If I have a number 1,2,3,4,5,6,7,8. I need the result something like below:
> > > >
> > > > 1,2,3,4,5 6,7,8
> > > > 1,2,3,4,7 5,6,8
> > > > 2,3,4,5,6 1,7,8
> > > > 1,2,3,6,7 4,5,8
> > > > 1,2,3,4,8 5,6,7
> > > > 3,4,6,7,8 1,2,5
> > > > ....
> > > >
> > >
> > > Try this:
> > >
> > > library(gtools)
> > > t(apply(combinations(8,5), 1, function(x) c(x,setdiff(1:8, x))))
> > >
> >
> > ______________________________________________
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> >
>
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