RE: [R] Count missing variables in dataset

From: Liaw, Andy <andy_liaw_at_merck.com>
Date: Mon 21 Mar 2005 - 22:31:21 EST


Something like:

sum(sapply(dat, function(x) ! x %in% c("A", "B", "C")))

probably would work.

HTH,
Andy

> From: Jan Sabee
>
> I have a problem about how to count missing variables in dataset.
> I have a question for my customer. They are must choice one of answer
> for example: A, B, C, D and E.
> Now, I have dataset which is the result from my question, for
> instance:
>
> x1 x2 x3 x4 x5
> A A A B A
> C A A A A
> B B A B A
> B B B C A
> A B B B B
> C B B B A
>
> I know that my customer only choice A, B and C.
> Are there any way to count variables that are not include in dataset.
> I mean D and E is missing in dataset.
>
> Thanks for your help.
> Jan Sabee
>
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R-help@stat.math.ethz.ch mailing list
https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html Received on Mon Mar 21 22:43:52 2005

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