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**
**> 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**
**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]]
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
There are many epochs. Which one are you interested in? If you are interested in
the POSIX time_t epoch, then you could look at ?DateTimeClasses to find out
about ?as.POSIXct. You might also find my email on inputting zones informative
[1].
Also, per the Posting Guide, please don't post in html format... it messes
up your R code.
[1] https://www.stat.math.ethz.ch/pipermail/r-help/2013-August/357939.html
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vivek kumar singh <vksingh.iiitb at gmail.com>
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**
>**> 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**
>**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.