[R] Problem with long number (from character to numeric class)

[PtitBleu]

Hello Dan,

I just need to make substractions, comparisons and to use them in a split
command.
Ptit Bleu.

> Hello,
>
> I have a text file with one column containing long number but stored as
> string.
> I download the file with read.table (and colClass) and the first row of
> this
> column is :
>
> "095842087016731010"
>
> As I need to make some calculations with these numbers, I tried to convert
> them using as.numeric.
> But then I get
> as.numeric("095842087016731010")
> 95842087016731008
>
> I understand the disappearing of the first 0 but I don't understand the
> substitution of the last 0 by 8.
>
> Is there a way to avoid that ?
> Thanks in advance,

What kind of processing do you need to do with these numbers?  There may be
better ways to handle the problem.

Dan

Daniel Nordlund
Bothell, WA USA

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