[R] as.numeric looses precision

[Calin Uioreanu]

Hello,

There's a difference between the displayed value and the internally stored.
You could use options(digits=10), but this is a global option, and will
affect all future numerical output. default value is 7

> p <- "1087.003489"
> as.numeric(p, digits=6)
[1] 1087.003
> options(digits=10) # set output precision
> as.numeric(p, digits=6)
[1] 1087.003489
>

for more information look here:
http://stackoverflow.com/questions/4540649/retain-numerical-precision-in-an-r-data-frame

regards calin


On Thu, Jul 2, 2015 at 3:56 PM Bos, Roger <roger.bos at rothschild.com> wrote:

> I have a string that contains a number and when I convert it to a number I
> loose precision and I would like to know if there is a way to avoid that.
> Here is my example:
>
> p <- "1087.003489"
> as.numeric(p, digits=6)
>
> R gives me 1087.003:
>
> > p <- "1087.003489"
> > as.numeric(p, digits=6)
> [1] 1087.003
>
> I would be nice if I could keep all the decimal places after the
> conversion.
>
> Thanks,
>
> Roger
>
>
>
>
>
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