I'm searching for an r command that will notify me if I create a time that does not exist due to Daylight Savings Time. For example, if I run the following command on a windows machine
> ISOdatetime(2010,03,14,2,10,0, tz = "") # My system time is set to the United States Central Time Zone [1] NA R returns NA, which is the behavior I want. However, if I run the same command on a mac, R returns a POSIXct object and I have to examine the object manually to notice that I had tried to create an impossible time. ISOdatetime(2010,03,14,2,10,0, tz = "") [1] "2010-03-14 01:10:00 CST" Is there a method of creating time objects in R that will always return NA for non-existant times, no matter the operating system? Thank you sincerely, Garrett [[alternative HTML version deleted]] ______________________________________________ R-help@r-project.org mailing list 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.