So try this :

aggregate(rep(1, nrow(x)), as.data.frame(x), sum)

On Fri, Sep 17, 2010 at 11:54 AM, Alaios <alaios@yahoo.com> wrote:

> My bad :(
> unfortunately does not work correct.
>
> This is some of the output of the table
> ..............
> [494,]   50   27
> [495,]   50   27
> [496,]   50   27
> [497,]   50   28
> [498,]   50   28
> [499,]   50   28
> [500,]   50   28
> [501,]   51   28
> [502,]   51   28
> [503,]   51   28
> [504,]   51   28
> [505,]   51   28
> [506,]   51   28
> [507,]   51   28
> [508,]   51   28
> [509,]   51   28
> [510,]   51   28
> [511,]   52   28
> [512,]   52   28
> [513,]   52   28
> [514,]   52   28
> [515,]   52   28
> [516,]   52   29
> [517,]   52   29
> [518,]   52   29
> ............
>
>
> I need the following results
> 50 27: 3
> 50 28: 4
> 51 28: 10
> 52 28: 5
> 52 29: 3
>
> So far nothing worked.
> Best Regards
> Alex
>
>
>
> ------------------------------
> *From:* Henrique Dallazuanna <wwwhsd@gmail.com>
> *To:* Alaios <alaios@yahoo.com>
>
> *Cc:* Rhelp <r-help@r-project.org>
> *Sent:* Fri, September 17, 2010 3:09:36 PM
>
> *Subject:* Re: [R] count frequency
>
> Try this:
>
> aggregate(rep(1, nrow(x)), x, sum)
>
> On Fri, Sep 17, 2010 at 9:19 AM, Alaios <alaios@yahoo.com> wrote:
>
>> Hello everyone,
>> please consider the following lines of a matrix
>>
>>
>> [574,]   59   32
>> [575,]   59   32
>> [576,]   59   32
>> [577,]   59   32
>> [578,]   59   32
>> [579,]   59   32
>> [580,]   59   32
>> [581,]   60   32
>> [582,]   60   33
>> [583,]   60   33
>> [584,]   60   33
>> [585,]   60   33
>> [586,]   60   33
>> [587,]   60   33
>> [588,]   60   33
>> [589,]   60   33
>> [590,]   60   33
>> [591,]   61   33
>> [592,]   61   33
>> [593,]   61   33
>> [594,]   61   33
>> [595,]   61   33
>> [596,]   61   33
>> [597,]   61   33
>> [598,]   61   33
>> [599,]   61   33
>> [600,]   61   33
>> [601,]   62   34
>>
>> Is it possible somehow to count the similarities between the first and
>> second
>> column and put them on a third column like this?
>>
>> 59 32 3
>> 60 33 5
>> 62 34 1
>>
>> where (3,5,1 are the frequencies for (59,32), (60,33) and (62,34)
>>
>> Best Regards
>> Alex
>>
>>
>>
>>
>>        [[alternative HTML version deleted]]
>>
>> ______________________________________________
>> R-help@r-project.org mailing list
>> https://stat.ethz.ch/mailman/listinfo/r-help
>> PLEASE do read the posting guide
>> http://www.R-project.org/posting-guide.html
>> and provide commented, minimal, self-contained, reproducible code.
>>
>
>
>
> --
> Henrique Dallazuanna
> Curitiba-Paraná-Brasil
> 25° 25' 40" S 49° 16' 22" O
>
>


-- 
Henrique Dallazuanna
Curitiba-Paraná-Brasil
25° 25' 40" S 49° 16' 22" O

	[[alternative HTML version deleted]]

