?complete.cases

On 10/28/06, Tong Wang <wangtong@usc.edu> wrote:
>
> Hi,
>    I have a data set (data frame) describing some features of  the
> students in a high school  in the following format:
>
> Stu ID        Year         feature 1          feature 2      .............
> 1001         1990
> 1001         1991
> 1001         1992
> 1002         1990
> 1002         1991
> 1002         1992
>
>
>   Some features of  a few of these students are missing,   I would like to
> ignore those students in my  analysis, but
> I really can' t figure out a neat way to do this in R.   I need to remove
> all the info. of a student (indicated by ID no.) if there
> are NA's in his/her features.
>
>    Could someone give me a quick tutorial on this ?
>
> I would really appreciate.
>
> best
>
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> and provide commented, minimal, self-contained, reproducible code.
>



-- 
Jim Holtman
Cincinnati, OH
+1 513 646 9390

What is the problem you are trying to solve?

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