Message-ID: <C0D73129-0DA7-4DAA-9166-B4F89B427885@comcast.net>
Date: 2013-11-17T03:15:15Z
From: David Winsemius
Subject: Change date time to epoch time
In-Reply-To: <52882E0D.8060104@gmail.com>
On Nov 16, 2013, at 8:46 PM, vivek kumar singh wrote:
> Hi All,
>
> I have time series data in (Year-month-date-hour-minute-second) format
> and i want to convert it to epoch time.
>
> I have tried the following:
> *> Sys.time()**
> **[1] "2013-11-17 10:39:46 MYT"**
> **> as.numeric(Sys.time())**
> **[1] 1384656006**
Should we assume this is "epoch time"?
> **> as.numeric("2013-11-17 10:39:46 MYT")**
> **[1] NA**
> **Warning message:**
> **NAs introduced by coercion **
> **> as.numeric("2013-11-17 10:39:46 MYT")**
> **[1] NA**
If it is then this is close:
as.numeric(as.POSIXct("2013-11-17 10:39:46 MYT"))
(You may need to supply an appropriate TZ offset in seconds
?POSIXct
--
David.
> **Warning message:**
> **NAs introduced by coercion **
> *
> Please let me know which function in R converts date-time to epoch
> time.
>
> Regards,
> Vivek
>
> [[alternative HTML version deleted]]
>
> ______________________________________________
> 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.
David Winsemius, MD
Alameda, CA, USA