Hello, I have a time series dataset in long format (15 minute data over approximately 2 years). The data set is composed of time series of multiple sensors; much of the time series are duplicate dates and times, but of different lengths.
I can plot the data converting the datetime to as.numeric, but they do not plot if I keep the data as POSIXlt. I know xyplot would plot the data if it was a zoo object, but my understanding (which could be wrong) is that I can’t convert to a zoo due to different lengths between my time series. Does anyone have experience plotting DateTime series in xyplot and having the axis labels be meaningful? The following is my working code so far xyplot(Cond ~ as.numeric(DateTime) | Sensor, data = dat, groups = id, layout=c(1, 2), type="l", xlab="Date", ylab="Relative Conductivity") I've incorporated scales but without luck xyplot(Cond ~ as.numeric(DateTime) | Sensor, data = dat, groups = id, layout=c(1, 2), type="l", xlab="Date", ylab="Relative Conductivity", scales = list(x = list(julian(dat$DateTime) ))) Thanks very much for any assistance. Kris -- View this message in context: http://r.789695.n4.nabble.com/customizing-asix-in-xyplot-in-lattice-tp4648755.html Sent from the R help mailing list archive at Nabble.com. ______________________________________________ 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.
