[R] help with checking out-of-range values in each column in data frame

[Gabor Grothendieck]

Try:

transform(data, f1 = factor(f1, levels = 1:5), f4 = factor(f4, 1:3))

On Jan 28, 2008 8:12 AM, Tom Cohen <tom.cohen78 at yahoo.se> wrote:
>  Dear list,
>
>  I have following data, where I want to check if any value in each
>  column is out of range. For example, column "f1" can only take values
>  1-5, so if any values less than 1 or > 5 will be
>  defined as missing value (i.e. NA), column "f4" can only take values
>  of 1-3 and any values that are outside this interval will be
>  considered as missing values. The below data is a subset of a big survey
>  sample and I want to create an automatic procedure to check if all particpants
>  gave a reasonable answer. How can I do this in R and also replace the empty
>  values with NA?
>
>  > dat
>    id f1 f2 f3 f4 f5 f6 f7 f8 f9 f10
> 1   1  5  3  1  1  1  1  2  1  1   1
> 2   2  5  5  1  1  1  1  2  1  1   2
> 3   3  3  4  1  1  1  1  2  1  1   1
> 4   4  5  5  1  1  1  1  1  1  1   1
> 5   5  4  3  2     1  2  2  1  2   3
> 6   6  4  4  1  2  2  1  2  1  1   1
> 7   7  4  4  1  1  1  2  3  2  2   2
> 8   8  4  5  2  2  2  2  2  2  2   2
> 9   9  4  4  2  3  3  3  3  3  3   3
> 10 10  4  3  1  2  3  1  2  1  2   3
> 11 11  2  5  1  1  2  1  3  1  1   2
> 12 12  4  3  1  2  3  3  3  3  2   3
> 13 13  5  5  1  1  1  1  2  1  1   2
> 14 14  5  3  3  3  3  2  1  3  1   1
> 15 15  4  3  1  1  1  2  2  2  1   2
> 16 16  3  2  2  3  2  3  3  2  2   3
> 17 17  4  5  1  1  1  1  2  1  1   1
> 18 18  3  3  2  2  3  2  3  2  3   3
> 19 19  4  4  1  2  2  2  3  2  3   3
> 20 20  4  4  1  2  3  3  3  2  3   3
>
> Thanks in advance,
>  Tom
>
>
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