R help - Sep 2008 - From time-strings to Unix-Epoche-time?

Hello,


I have strings with date-/time-data from a logfile.

For a sort-by-time (and other time-related analysis)
I need something to convert the
times to the Unix-epoche-time (better also with parts
of seconds).

Is there something that does that job (or a similar conversion)
in R?

TIA,
   Oliver Bandel

If you are using POSIXct, just 'unclass' the value:
> x <- as.POSIXct('2008-09-12 09:00')
> str(x)
 POSIXct[1:1], format: "2008-09-12 09:00:00"
> unclass(x)
[1] 1221210000
attr(,"tzone")
[1] ""


On Fri, Sep 12, 2008 at 9:15 AM, Oliver Bandel
<oliver at first.in-berlin.de> wrote:
> Hello,
>
>
> I have strings with date-/time-data from a logfile.
>
> For a sort-by-time (and other time-related analysis)
> I need something to convert the
> times to the Unix-epoche-time (better also with parts
> of seconds).
>
> Is there something that does that job (or a similar conversion)
> in R?
>
> TIA,
>   Oliver Bandel
>
> ______________________________________________
> R-help at 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.
>


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

What is the problem that you are trying to solve?

On Fri, 12 Sep 2008, Oliver Bandel wrote:
> Hello,
>
>
> I have strings with date-/time-data from a logfile.
>
> For a sort-by-time (and other time-related analysis)
> I need something to convert the
> times to the Unix-epoche-time (better also with parts
> of seconds).
>
> Is there something that does that job (or a similar conversion)
> in R?
as.numeric, unsurprisingly, for class  "POSIXct" (and as.POSIXct if 
needed ...).  It can be to sub-second accuracy (use %OS to read such 
fields).

-- 
Brian D. Ripley,                  ripley at stats.ox.ac.uk
Professor of Applied Statistics,  http://www.stats.ox.ac.uk/~ripley/
University of Oxford,             Tel:  +44 1865 272861 (self)
1 South Parks Road,                     +44 1865 272866 (PA)
Oxford OX1 3TG, UK                Fax:  +44 1865 272595