[R] aggregate combination data

[Rui Barradas]

Hello,

You forgot to Cc the list.
As for your question, you want all possible combinations of rows? For 
all possible values of k in 1:19?

 > sum(sapply(1:19, function(k) choose(19, k)))
[1] 524287

Or you want to split the data.frame by plot and the have all possible 
combinations?

 > sum(sapply(1:10, function(k) choose(10, k)))
[1] 1023
 > sum(sapply(1:9, function(k) choose(9, k)))
[1] 511

Rui Barradas
Em 14-11-2012 11:31, catalin roibu escreveu:
> I don't want to sum the data from all combination. I want to group
> (aggregate) the all values resulted from all combination possible.
> plot d
> 1 14
> 1 13
> 1 12
> 1 14
> 1 18
> 1 20
> 1 21
> 1 43
> 1 108
> 1 43
> 2 41
> 2 61
> 2 83
> 2 61
> 2 84
> 2 45
> 2 21
> 2 12
> 2 11
>
>
> On 14 November 2012 13:25, Rui Barradas <ruipbarradas at sapo.pt> wrote:
>
>> Hello,
>>
>> Please use ?dput to post your data.
>>
>> dput(MyData)  # paste the output of this in a post.
>>
>> And you must be more clear, what does "aggregate" mean? To sum? In the
>> mean time see
>>
>> ?combn
>>
>> Hope this helps,
>>
>> Rui Barradas
>> Em 14-11-2012 11:11, catalin roibu escreveu:
>>
>>> Dear R users,
>>> I want to aggregate all *d *data from  all combination of n *plots* taken
>>>
>>> by k.
>>> Thank very much!
>>>
>>> My data is like that:
>>>              plot              d  1 14  1 13  1 12  1 14  1 18  1 20  1 21
>>>   1
>>> 43  1 108  1 43  2 41  2 61  2 83  2 61  2 84  2 45  2 21  2 12  2 11
>>>   ...  100
>>>         10
>>> 100       12
>>>
>>>
>>>
>>>
>>>
>