[R] subsetting

[Val]

Thank you for the info. I did solve it using
unlist lapply strsplit  functions.


On Wed, Feb 24, 2016 at 9:31 PM, Bert Gunter <bgunter.4567 at gmail.com> wrote:

> Have you gone through any R tutorials yet? I didn't entirely
> understand your question (and so cannot answer), but this sounds like
> a basic subsetting/data wrangling task that you should know how to do
> if you have gone through a basic tutorial or two.
>
> See also ?subset, ?"[" (basic indexing) and possibly also the plyR,
> dplyr, or data.table packages that provide what some consider more
> convenient and/or faster interfaces to these sorts of tasks.
>
> See also: http://vita.had.co.nz/papers/tidy-data.pdf
>
> for a nice article on "tidying" data (using plyr/dplyr).
>
>
>
> Cheers,
> Bert
>
>
> Bert Gunter
>
> "The trouble with having an open mind is that people keep coming along
> and sticking things into it."
> -- Opus (aka Berkeley Breathed in his "Bloom County" comic strip )
>
>
> On Wed, Feb 24, 2016 at 6:57 PM, Val <valkremk at gmail.com> wrote:
> > Hi all,
> >
> > One of the the columns of a data frame has a value such like
> >
> > AAAAS-2001-yy
> > AAAAS-2004-xx
> > FFFFF-2007-SS
> > and so on
> >
> > based on this column (variable) I want  subset a data frame  where the
> > middle value of this variable is between 2001 to 2004.
> > THE END RESULT THE DATA FRAME  WILL BE THIS.
> >
> > AAAAS-2001-yy
> > AAAAS-2004-xx
> >
> >
> > THANK YOU IN ADVANCE
> >
> >         [[alternative HTML version deleted]]
> >
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>

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