The structure of the dataframe is str(wy2016) 'data.frame': 8784 obs. of 4 variables: $ date : chr "2015-10-01" "2015-10-01" "2015-10-01" "2015-10-01" ... $ time : chr "00:00" "01:00" "02:00" "03:00" ... $ elev : num 90.7 90.7 90.7 90.7 90.7 ... $ myDate: Date, format: "2015-10-01" "2015-10-01" ...
The command and results on this dataframe is: wy2016$myTime <- as.POSIXct(paste(wy2016$date, wy2016$time)) Error in as.POSIXlt.character(x, tz, ...) : character string is not in a standard unambiguous format Data for other water years do not throw this error. How can I identify which row(s) among the 8784 have a date or time formatting error? 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.
