[R] comparing 2 long lists in R

[Bogdan Tanasa]

Dear Bert and Sarah, thank you for your suggestions. Yes, I came across
"dplyr" that has a few functions already implemented, thanks again !

On Thu, Sep 24, 2015 at 1:17 PM, Bert Gunter <bgunter.4567 at gmail.com> wrote:

> Also, in addition to what Sarah told you, have you checked on the
> Bioconductor site, as this sounds like the sort of thing that they may
> well have something for already.
>
> ... and you've posted here often enough that you shouldn't still be
> posting HTML and you should know about toy examples!
>
> Cheers,
> Bert
>
> Bert Gunter
>
> "Data is not information. Information is not knowledge. And knowledge
> is certainly not wisdom."
>    -- Clifford Stoll
>
>
> On Thu, Sep 24, 2015 at 12:57 PM, Sarah Goslee <sarah.goslee at gmail.com>
> wrote:
> > merge() most likely, but: are these really lists in the R sense?
> >
> > The correct answer depends on what the format actually is; you need to
> > use dput() or some other unambiguous way of providing sample data.
> >
> > Without a reproducible example that includes some sample data provided
> > using dput() (fake is fine), the code you used, and some clear idea of
> > what output you expect, it's impossible to figure out how to help you.
> > Here are some suggestions for creating a good reproducible example:
> >
> http://stackoverflow.com/questions/5963269/how-to-make-a-great-r-reproducible-example
> >
> > Sarah
> >
> >
> > On Thu, Sep 24, 2015 at 3:43 PM, Bogdan Tanasa <tanasa at gmail.com> wrote:
> >> Dear all,
> >>
> >> please could you advise on a computationally quick way to compare and
> merge
> >> 2 long lists in R;
> >> the lists are of the following type, for example :
> >>
> >> <> in list 1 :
> >>
> >> chromosome, coordinateA, coordinateB, value1
> >> chromosome, coordinateC, coordinateC, value2,
> >> etc
> >>
> >> <> in list 2 :
> >>
> >> chromosome, coordinateX, coordinateY, value6
> >> chromosome, coordinateZ, coordinateT, value8,
> >> etc
> >>
> >> In the unified list, if coordinateA=coordinateX, and
> >> coordinateB=coordinateY, then we write :
> >>
> >> chromosome, coordinateA, coordinateB, value1, coordinateX, coordinateY,
> >> value6,
> >>
> >> otherwise, we write the individual values :
> >>
> >> chromosome, coordinateA, coordinateB, value1,
> >> chromosome, coordinateX, coordinateY, value6,
> >>
> >> thanks,
> >>
> >> bogdan
> >>
> >>         [[alternative HTML version deleted]]
> >>
> > and please don't post in HTML.
> >
> > --
> > Sarah Goslee
> > http://www.functionaldiversity.org
> >
> > ______________________________________________
> > R-help at r-project.org mailing list -- To UNSUBSCRIBE and more, see
> > 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.
>

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