[R] Looping Through DataFrames with Differing Lenghts

Ulrik Stervbo
Tue, 28 Mar 2017 03:15:57 -0000

You could use merge() or %in%.

Best,
Ulrik

Mark Sharp <msharp at txbiomed.org> schrieb am Mo., 27. M?rz 2017, 22:20:

> Make some small dataframes of just a few rows that illustrate the problem
> structure. Make a third that has the result you want. You will get an
> answer very quickly. Without a self-contained reproducible problem, results
> vary.
>
> Mark
> R. Mark Sharp, Ph.D.
> msharp at TxBiomed.org
>
>
>
>
>
> > On Mar 27, 2017, at 3:09 PM, Paul Bernal <paulbernal07 at
gmail.com> wrote:
> >
> > Dear friends,
> >
> > I have one dataframe which contains 378 observations, and another one,
> > containing 362 observations.
> >
> > Both dataframes have two columns, one date column and another one with
> the
> > number of transits.
> >
> > I wanted to come up with a code so that I could fill in the dates that
> are
> > missing in one of the dataframes and replace the column of transits
with
> > the value NA.
> >
> > I have tried several things but R obviously complains that the length
of
> > the dataframes are different.
> >
> > How can I solve this?
> >
> > Any guidance will be greatly appreciated,
> >
> > Best regards,
> >
> > Paul
> >
> > [[alternative HTML version deleted]]
> >
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> > and provide commented, minimal, self-contained, reproducible code.
>
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