[R] Doing things with POSIXt

[Vadim Ogranovich]

Dear R-Users,

I have a data file with timestamps and I wanted to use POSIXct time data
type to represent the respective column. I played around with the type and
found a couple of issues:

* there seems to be no direct way of reading datetimes into a variable.
Let's say this is my file
"1992-02-27 23:03:20 PST"
"1992-02-27 22:29:56 PST"
"1992-01-14 01:03:30 PST"


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