On Wed, 18 Jul 2018, David Winsemius wrote:
I would not destroy the possibility of using the original values:
David, What are the benefits of keeping date and time as factors?
allyears$myDate <- as.Date(as.character(allyears$date)) allyears$myTime <- as.POSIXct(paste(allyears$date, allyears$time))
The latter command is not working on the full (402415 rows in the allyears data set): allyears$myTime <- as.POSIXct(paste(allyears$date, allyears$time)) Error in as.POSIXlt.character(x, tz, ...) : character string is not in a standard unambiguous format
It's spelled `as.numeric`,
Ah, I missed that. Thank you.
... but I'm having difficulty thinking about what sort of elevation (or would that be "depth") would be be measured by "-3762938880000000369098752".
I also was curious about that figure and grep doesn't find it in the original data file so I've no idea where R-3.5.0 came up with it. I'll read more about the POSIX datetime functions. Thanks again, 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.
