> On Oct 2, 2018, at 10:11 AM, David Winsemius <dwinsem...@comcast.net> wrote:
>
>
>> On Oct 2, 2018, at 6:30 AM, Marc Girondot via R-help <r-help@r-project.org>
>> wrote:
>>
>> Dear members... are these results normal ?
>>
>> For the first one, no problem. I expected this:
>>
>>> strptime("05/01/18 01:00:00 AM", format = ("%m/%d/%y %I:%M:%S %p"),
>>> tz="Asia/Jayapura")
>> [1] "2018-05-01 01:00:00 WIT"
>>
>> For this one, it is ok also:
>>
>>> strptime("05/01/18 01:00:00 AM", format = ("%m/%d/%y %I:%M:%S %p"),
>>> tz="Asia/Jayapura")-1
>> [1] "2018-05-01 00:59:59 WIT"
>>
>> But how to explain this ???
>>
>>> strptime("05/01/18 00:59:59 AM", format = ("%m/%d/%y %I:%M:%S %p"),
>>> tz="Asia/Jayapura")
>> [1] NA
>
> I'm afraid this is "as documented":
>
> %I
> Hours as decimal number (01–12).
>
> I see no reason not to use "%H"
If you need to use %I and %p then you may need to pre-process with sub(" 00", "
12", object_name)
strptime("05/01/18 12:59:59 AM", format = ("%m/%d/%y %I:%M:%S %p"),
tz="Asia/Jayapura")
[1] "2018-05-01 00:59:59 WIT"
>
> --
> David.
>>
>> Thanks for your advices
>> Marc
>> ______________________
>>
>> R 3.5.1 on MacOS 10.14
>>
>>> version
>> _
>> platform x86_64-apple-darwin15.6.0
>> arch x86_64
>> os darwin15.6.0
>> system x86_64, darwin15.6.0
>> status
>> major 3
>> minor 5.1
>> year 2018
>> month 07
>> day 02
>> svn rev 74947
>> language R
>> version.string R version 3.5.1 (2018-07-02)
>> nickname Feather Spray
>>
>> ______________________________________________
>> R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see
>> 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
> Alameda, CA, USA
>
> 'Any technology distinguishable from magic is insufficiently advanced.'
> -Gehm's Corollary to Clarke's Third Law
>
> ______________________________________________
> R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see
> 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
Alameda, CA, USA
'Any technology distinguishable from magic is insufficiently advanced.'
-Gehm's Corollary to Clarke's Third Law
______________________________________________
R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see
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.
