Converting timestamps using strptime - R [duplicate]

Question

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Convert numbers to dates [duplicate] (2 answers)

Closed 8 years ago.

I have input data with date and time stamps as "140128142257" which is the equivalent of "14/01/28 14:22:57" or "%Y/%m/%d %H:%M:%S".

I cannot get R to read this in so I can convert it to a usable date and timestamp. Any helpful advice would be appreciated.

Here is what I have tried:

datetime <- as.POSIXct(strptime(date[,2],format="%Y%m%d%H%M%S")

However this just gives NA * length of array.

Answer 1

The uppercase %Y is used for four-digit years. You have to use %y for two-digit years.

strptime("140128142257", format = "%y%m%d%H%M%S")
# [1] "2014-01-28 14:22:57"