On Fri, 26 Jun 2015, MacQueen, Don wrote:
I would have just assigned them all to the first day of the month, using as.Date( paste0(allchem$sampdate,'-01') ) (or maybe the middle of the month represented by the 15th) and then had a variable that was of the Date class in the base R (with which I am familiar, no small consideration).
Don, The original data had the day of the month, but that's not important. I suppose I could leave it in and still analyze and plot by month.
Depending on what needs to be done with them -- plotting with a date axis? -- calculating elapsed time between sampling events? -- I suppose one or the other of 'yearmon' or 'Date' might be more convenient.
Simple is better. Thanks, Rich ______________________________________________ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see 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.
