[R] Convert character date time to R date-time variable.

[Rui Barradas]

Às 16:30 de 07/12/2023, Rui Barradas escreveu:
> Às 16:21 de 07/12/2023, Sorkin, John escreveu:
>> Colleagues,
>>
>> I have a matrix of character data that represents date and time. The 
>> format of each element of the matrix is
>> "2020-09-17_00:00:00"
>> How can I convert the elements into a valid R date-time constant?
>>
>> Thank you,
>> John
>>
>>
>>
>> John David Sorkin M.D., Ph.D.
>> Professor of Medicine, University of Maryland School of Medicine;
>>
>> Associate Director for Biostatistics and Informatics, Baltimore VA 
>> Medical Center Geriatrics Research, Education, and Clinical Center;
>>
>> PI Biostatistics and Informatics Core, University of Maryland School 
>> of Medicine Claude D. Pepper Older Americans Independence Center;
>>
>> Senior Statistician University of Maryland Center for Vascular Research;
>>
>> Division of Gerontology and Paliative Care,
>> 10 North Greene Street
>> GRECC (BT/18/GR)
>> Baltimore, MD 21201-1524
>> Cell phone 443-418-5382
>>
>>
>>
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>> and provide commented, minimal, self-contained, reproducible code.
> Hello,
> 
> Coerce with ?as.POSIXct
> Don't forget the underscore in the format.
> 
> 
> as.POSIXct("2020-09-17_00:00:00", format = "%Y-%m-%d_%H:%M:%S")
> 
> 
> Hope this helps,
> 
> Rui Barradas
> 
> 
Sorry, I forgot:


lubridate::ymd_hms("2020-09-17_00:00:00")


Hope this helps,

Rui Barradas


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