This one really sheds light on that old adage
"...When you can't see the forest for the trees...."!
Sarah Goslee wrote:
>
> You could do something like this:
>
>> revtrunc <- function(x) { x - floor(x) }
>
>> revtrunc(39.5)
> [1] 0.5
>
> But note:
>> revtrunc(-39.5)
> [1] 0.5
>
> I'm not sure what you'd want for negative numbers. One possibility:
>
> revtrunc <- function(x) { sign(x) * (x - floor(x)) }
>> revtrunc(39.5)
> [1] 0.5
>> revtrunc(-39.5)
> [1] -0.5
>
> Sarah
>
> On Thu, Apr 16, 2009 at 5:30 PM, T.D.Rudolph <prairie.pic...@gmail.com>
> wrote:
>>
>> hello there,
>>
>> Is there a way of truncating in the opposite direction so as to retain
>> only
>> the values to the right of the decimal??
>>
>> i.e. rather than:
>>> trunc(39.5)
>> [1] 39
>>
>> i would get something like:
>>> revtrunc(39.5)
>> [1] 0.5
>>
>> I've been searching to no avail but I imagine there is a very simple
>> solution!
>> Tyler
>
>
>
> --
> Sarah Goslee
> http://www.functionaldiversity.org
>
> ______________________________________________
> R-help@r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide
> http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
>
>
--
View this message in context:
http://www.nabble.com/%22reverse-truncate%22-to-extract-only-decimal-values-tp23086851p23087144.html
Sent from the R help mailing list archive at Nabble.com.
______________________________________________
R-help@r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
