[R] POSIXct date missing "time component"

[Jeff Newmiller]

Rather than altering your data, it is better to use the same date time format at all times, and specify it explicitly when converting to or from character.
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Sent from my phone. Please excuse my brevity.

"chuck.01" <CharlieTheBrown77 at gmail.com> wrote:

>I did  not read that close enough; thanks again. 
>
>
>
>
>arun kirshna wrote
>> Hi,
>> 
>> ?as.POSIXct()
>> format: character string giving a date-time format as used by
>>           ‘strptime’.
>> 
>> ?strptime()
>> format: A character string.  The default for the ‘format’ methods is
>>           ‘"%Y-%m-%d %H:%M:%S"’ if any component has a time component
>>           which is not midnight, and ‘"%Y-%m-%d"’ otherwise.  If
>>           ‘options("digits.secs")’ is set, up to the specified number
>>           of digits will be printed for seconds.
>> 
>> So, may be it is better to add a sec and later subtract it.
>> 
>>  dates.mine2<-dates.mine+1
>> dates.mine2[3]
>> #[1] "2009-05-22 00:00:01 GMT"
>>  dates.mine3<-dates.mine2-1
>>  dates.mine3[3]
>> #[1] "2009-05-22 GMT"
>> A.K.
>> 
>> 
>> 
>> 
>> 
>> 
>> ----- Original Message -----
>> From: chuck.01 <
>
>> CharlieTheBrown77@
>
>> >
>> To: 
>
>> r-help@
>
>> Cc: 
>> Sent: Tuesday, October 30, 2012 5:21 PM
>> Subject: Re: [R] POSIXct  date missing "time component"
>> 
>> Um, OK. 
>> My dates have times, they are 00:00:00 (i.e. midnight)
>> I'll just add a fraction of a second my dates and go with it.
>> 
>> Thanks for the reply. 
>> 
>> 
>> 
>> 
>> arun kirshna wrote
>>> HI,
>>> Please check this link
>>> (http://rss.acs.unt.edu/Rdoc/library/base/html/as.POSIXlt.html). 
>>> "Dates without times are treated as being at midnight UTC. "
>>> 
>>> May be you can try this (if it doesn't create additional problems):
>>>  dates.mine2<-dates.mine+1
>>> dates.mine2
>>> #[1] "2009-05-21 23:30:01 GMT" "2009-05-21 23:45:01 GMT"
>>> #[3] "2009-05-22 00:00:01 GMT" "2009-05-22 00:15:01 GMT"
>>>  dates.mine2[3]
>>> #[1] "2009-05-22 00:00:01 GMT"
>>> str(dates.mine2)
>>>  #POSIXct[1:4], format: "2009-05-21 23:30:01" "2009-05-21 23:45:01"
>...
>>> A.K.
>> 
>> 
>> 
>> 
>> 
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