[R] shift by one column given rows in a dataframe

[Bert Gunter]

Ah, so apparently you require some sort of psychic abilities...

For how else would one choose which three values to keep in a row that was:

a  2   b  5

based on your specification that "xxx could be anything."

Cheers,

Bert
Bert Gunter

"Data is not information. Information is not knowledge. And knowledge
is certainly not wisdom."
   -- Clifford Stoll


On Thu, Jul 23, 2015 at 12:56 PM, maxbre <mbressan at arpa.veneto.it> wrote:
> Hi
>
> thank you for your reply: it's a neat solution but unfortunately not
> applicable to my specific case;
>
> in fact as I specified in my first post (I may have been not enough clear,
> sorry for that!) I can not rely on any search method grep-like because the
> value "xxx" in the rows of "df_start" can be anything (string or numeric and
> always different) so that I necessarely need to apply by row index position
> (i.e. in my reproducible example rows: 2, 3, 5);
>
> thank you again for your kind help but still searching for a solution...
>
> best
>
>
>
> --
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