[R] Dataframe: Average cells of two rows and replace them with one row

[Greg Snow]

Look at the aggregate function.  As long as you have a column like
Name that indicates which rows should be averaged together it will
work (technically it will average the other rows as well, but since
the average of 1 number is that number you will not see a difference).

On Tue, May 27, 2014 at 2:06 PM, Verena Weinbir <vweinbir at gmail.com> wrote:
> Hello,
>
> I have a big dataframe, and want to average two specific cells of two
> specific rows and then replace those two rows with one row which contains
> the averaged cells. Example (row 3 and 4: Cells2 and Cells3 averaged and
> replaced)
>
>     NameC1 C2 C3
>   1  A  3  3  5
>   2  B  2  7  4
>   3  C  4  3  3
>   4  C  4  4  6
>   5  D  5  5  3
>
>
>
>     NameC1 C2  C3
>   1  A  3  3   5
>   2  B  2  7   4
>   3  C  4  3.5 4.5  4  D  5  5   3
>
>
> Many thanks in advance!
>
> Best,
>
> Verena
>
>         [[alternative HTML version deleted]]
>
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-- 
Gregory (Greg) L. Snow Ph.D.
538280 at gmail.com