This should be easy, but now I have tried for an hour, so please help.
I want to change
datetime <- "2017-01-18T08:04:18.570Z"
> datetime
[1] "2017-01-18T08:04:18.570Z"
> class(datetime)
[1] "character"
to POSIXct. I tried:
as.POSIXct(datetime, format="%Y-%m-%dT%H:%M:%sZ")
but it returns NA. Any suggestions?