It will be great if you can reproduce some code and  data you are working on.


Bhupendrasinh Thakre





On Oct 1, 2012, at 4:25 PM, bibek sharma <mbhpathak@gmail.com> wrote:

> Hello,
> I am a new R -user and request your help for the following problem.
> I need to merge two dataset of longitudinal study which has two column
> (id and respose) common. when I used merge option to join the datas
> side be side,  because of the repeated subject id, I got larger data
> set which is not accurate.
> 
> I would like to connect twi data sets by id and response in such a
> way that data are connected by same id and response type  and if the
> same subject has less data point in one data set, then produce NA.
> Sample data sets is attached.
> 
> Bibek
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> and provide commented, minimal, self-contained, reproducible code.


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