R help - Apr 2010 - time difference

Hi,

Does anyone know how to take a time difference when the format of the time
is as 13:22:23.586? I am trying to take the difference of time between stock
transactions and need to keep the three decimal places for seconds. I have
tried *diff(strptime(x, "%H:%M:%S.000))*, but apperantly that doesn't
work.

Carol Gao

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Carol Gao <carol.gaox <at> gmail.com> writes:
> 
> Hi,
> 
> Does anyone know how to take a time difference when the format of the time
> is as 13:22:23.586? I am trying to take the difference of time between
stock
> transactions and need to keep the three decimal places for seconds. I have
> tried *diff(strptime(x, "%H:%M:%S.000))*, but apperantly that
doesn't work.
> 
> Carol Gao
> 
> 	[[alternative HTML version deleted]]
> 
> 


I found this:
http://tolstoy.newcastle.edu.au/R/e6/help/09/05/15738.html

It seems to me that this is partly an options issue. Maybe this is something to
work with:

options(digits.secs=3)
strptime(x, "%H:%M:%S%OS")

?strptime

Read the documentation and you will find reference to "%OSn"
> x <- strptime('13:45:34.123', format="%H:%M:%OS")
> x
[1] "2010-04-22 13:45:34"
> format(x, format="%H:%M:%OS3")
[1] "13:45:34.123"
>

On Thu, Apr 22, 2010 at 2:58 AM, Carol Gao <carol.gaox@gmail.com> wrote:
> Hi,
>
> Does anyone know how to take a time difference when the format of the time
> is as 13:22:23.586? I am trying to take the difference of time between
> stock
> transactions and need to keep the three decimal places for seconds. I have
> tried *diff(strptime(x, "%H:%M:%S.000))*, but apperantly that
doesn't work.
>
> Carol Gao
>
>        [[alternative HTML version deleted]]
>
> ______________________________________________
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> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide
>
http://www.R-project.org/posting-guide.html<http://www.r-project.org/posting-guide.html>
> and provide commented, minimal, self-contained, reproducible code.
>


-- 
Jim Holtman
Cincinnati, OH
+1 513 646 9390

What is the problem that you are trying to solve?

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