[R] Looping Through DataFrames with Differing Lenghts

Mark Sharp msharp at txbiomed.org
Mon Mar 27 22:15:39 CEST 2017

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.

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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