I recently called plot(x,y) where x was an array of POSIXct timestamps, and was pleasantly surprised that it produced a nice plot right out of the box:
z <- as.POSIXct(c("2006-10-26 08:00:00 EDT","2007-10-25 12:00:00 EDT")) x <- seq(z[1],z[2],len=100) y <- 1:100 plot(x,y,type="l") The X axis had nice labels, one tick mark every other month. (Plotting on a 1024x768 X11 display, Fedora Core 5, R version 2.5.1.) What I really wanted to do was a little more elaborate, involving multiple Y variables, so I did the following to draw the axes and frame the plot: plot(range(x),range(y),type="n") and suddenly the nice X axis labels were not so nice anymore. There were three tickmarks labeled "Nov", "Oct" and "Nov", and that's all. (range(x) strips the tzone attribute from x, but replacing range(x) with c(x[1],x[100]) doesn't change anything). If x covers a slightly larger span of time, e.g. z <- as.POSIXct(c("2006-10-1 08:00:00 EDT","2007-10-25 12:00:00 EDT")) x <- seq(z[1],z[2],len=100) plot(x,y,type="l") then the x axis labeling is also problematic, consisting of a single tick at "2007". Is there anything I can do about this, short of turning off automatic X labels and doing things myself? ______________________________________________ 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.