[R] formating chron date times for printing

[Gabor Grothendieck]

Also the paste solution can be abbreviated to just:

   paste(as.Date(x), x - floor(x))

On Tue, Jun 29, 2010 at 2:57 PM, Gabor Grothendieck
<ggrothendieck at gmail.com> wrote:
> The time zone independent solution, i.e.  paste(as.Date(x), format(x -
> floor(x))),
> is the safer although format(as.POSIXlt(x, tz = "GMT")) seems to work too.
>
> On Tue, Jun 29, 2010 at 2:44 PM, stephen sefick <ssefick at gmail.com> wrote:
>> Thank you both!  If I don't want to deal with a Time Zone potentailly
>> converting some of the dates, which would be your suggestions.  Or,
>> are they all the same way to skin a cat.  Again thank you for your
>> wonderful help.
>> kindest regards,
>>
>> Stephen Sefick
>>
>>
>> On Tue, Jun 29, 2010 at 1:39 PM, Gabor Grothendieck
>> <ggrothendieck at gmail.com> wrote:
>>> On Tue, Jun 29, 2010 at 2:22 PM, Gabor Grothendieck
>>> <ggrothendieck at gmail.com> wrote:
>>>> On Tue, Jun 29, 2010 at 2:01 PM, stephen sefick <ssefick at gmail.com> wrote:
>>>>> the date were created with chron with this argument
>>>>>
>>>>> format=c(dates="Y/m/d", times="H:M:S"))
>>>>>
>>>>> so I have the dates being displayed as
>>>>>
>>>>> (10/06/22 12:00:00)
>>>>>
>>>>> I would like to have them displayed as
>>>>>
>>>>> "2010-06-22 12:00:00" or "%Y-%m-%d %H:%M:%S"
>>>>>
>>>>> and then I can convert these for mergeing with another data frame
>>>>>
>>>>> x <- (structure(c(14464, 14464.0104166667, 14464.0208333333, 14464.03125,
>>>>> 14464.0416666667), format = structure(c("Y/m/d", "H:M:S"), .Names = c("dates",
>>>>> "times")), origin = c(1, 1, 1970), class = c("chron", "dates",
>>>>> "times")))
>>>>>
>>>>> reading through old posts I found this:
>>>>>
>>>>> format(x, enclosed = c("", ""))
>>>>>
>>>>> which put the which surrounds the date time with "" instead of ()
>>>>> now I would like to change the format of the dates to print like the
>>>>> above specified.
>>>>> kindest regards,
>>>>>
>>>>
>>>> Try this:
>>>>
>>>>> format(as.POSIXlt(x, tz = "GMT"))
>>>> [1] "2009-08-08 00:00:00" "2009-08-08 00:15:00" "2009-08-08 00:29:59"
>>>> [4] "2009-08-08 00:45:00" "2009-08-08 01:00:00"
>>>>
>>>
>>> Also here is another solution:
>>>
>>>> paste(as.Date(x), format(x - floor(x)))
>>> [1] "2009-08-08 00:00:00" "2009-08-08 00:15:00" "2009-08-08 00:30:00"
>>> [4] "2009-08-08 00:45:00" "2009-08-08 01:00:00"
>>>
>