Here is what I use:
unix2POSIXct(1317857320)
[1] "2011-10-05 19:28:40 EDT"
unix2POSIXct <- function (time) structure(time, class = c("POSIXt",
"POSIXct"))
On Wed, Oct 5, 2011 at 7:38 PM, Mike Williamson <this.is....@gmail.com> wrote:
> Hi,
>
> In short, I would like to know if there is any way to convert a numeric
> into a date, similar to how strptime() can convert a string to a date time
> class?
>
> There are some functions, etc. which don't work well with dates, and
> tend to force them into numerics. I understand that the number it spits
> back is the number of seconds since the beginning of 1970 (see the first few
> sentences of the "Details" portion of ?DateTimeClasses).
> However, it's a bit of a hassle to convert that by hand. I can create a
> function to do this, and it isn't so hard, but I found it hard to believe
> such a function didn't already exist, so I wanted to ask the community.
>
> As an example, today (Oct 5th 2011 at approximately 4:30pm, Pacific
> time) is approximately 1317857320 as a numeric, but I would like to know how
> to go from that number back to the "2011-10-05 16:28:39 PDT" date time class
> which originally generated it.
>
> Thanks!
> Mike
>
> ---
> XKCD <http://www.xkcd.com>
>
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>
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--
Jim Holtman
Data Munger Guru
What is the problem that you are trying to solve?
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