[R] time extraction and normalization

[R. Michael Weylandt]

Use something like

format(as.POSIXct(xxx, format = "STRING"), format = "STRING2")

where the appropriate formatting codes can be worked out using the
info in ?strptime

Cheers,
Michael

On Mon, Oct 15, 2012 at 9:32 PM, york8866 <yu_york at hotmail.com> wrote:
> Dear all,
>
> I have a series of time variables such as:
>
> 04MAY2011:08:19:00
> 01JUN2011:09:44:00
> 28JUN2011:08:08:00
> 25JUL2011:07:44:00
>
>
> How could I extract the time as a number, so that I can normalize the times
> by the first time variable?
>
> Thanks,
>
>
>
>
>
> --
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