Re: Simple NA problem

[Dimitris Rizopoulos <Dimitris.Rizopoulos@med.kuleuven.be>]

say 'data' is your data.frame, then try this:

data[!is.na(data$a), ]


I hope it helps.

Best,
Dimitris

----
Dimitris Rizopoulos
Ph.D. Student
Biostatistical Centre
School of Public Health
Catholic University of Leuven

Address: Kapucijnenvoer 35, Leuven, Belgium
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Web: http://med.kuleuven.be/biostat/
     http://www.student.kuleuven.be/~m0390867/dimitris.htm


Quoting Jan Ivanouw <ivanouw@post8.tele.dk>:

> I am sorry I can't find the solution to this simple problem. Can anyone help?
>
> I have a (large) data frame with missing values, like this:
>
> a       b     c
> 1       3     5
> NA    9     2
> 3       5     2
> NA    8     6
> 5       3     7
>
> Based on non-missing values of variable a, I want it changed to
>
> a     b     c
> 1     3     5
> 3     5     2
> 5     3     7
>
>
> Thank you
>
> Jan Ivanouw PhD
> University of Copenhagen
> Denmark


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