[R] group by rows

[Sarah Goslee]

On Wed, Mar 9, 2016 at 8:28 AM, carol white <wht_crl at yahoo.com> wrote:
> What should be FUN in aggregate as no function like mean, sum etc will be
> applied

I have no idea, since you haven't told us what you want the results to
look like.


> Carol
>
>
> On Wednesday, March 9, 2016 1:59 PM, Sarah Goslee <sarah.goslee at gmail.com>
> wrote:
>
>
> Possibly aggregate(), but you posted in HTML so your data were mangled.
>
> Please use dput(), post in plain text, and try to explain more clearly
> what you want the result to look like.
>
> Sarah
>
> On Wed, Mar 9, 2016 at 7:09 AM, carol white via R-help
> <r-help at r-project.org> wrote:
>> How is it possible to group rows of a matrix or a data frame by the same
>> values of the first column?
>> 1 14331 453452 653 3762 45
>>
>> 1 1433,453452 45, 653 376
>> Thanks
>>
>> Carol
>