Dear helpeRs, I am working with a dataframe that includes a column, "calendar", used for plotting time series.
> class(dat$calendar) [1] "POSIXt" "POSIXlt" When I finish working, I save my data as a .csv file. When I read the file in again, "calendar" is always a factor > class(dat$calendar) [1] "factor" and I have to turn it back into a date-time object. Is this unavoidable when going back and forth from a .csv, or can I do something differently to retain the class? R 2.11.1 on Windows OS. Thank you. Toby ______________________________________________ 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.