I think it is a bug. Apparently plot.POSIXct calls axis.POSIXct for both y (correct) and x (incorrect) axes:
set.seed(1) x=seq(1,1e8,length=100)+round(runif(100)*1e8) y=as.POSIXct(x,origin="2001-01-01") plot(y, axes=FALSE) axis.POSIXct(2, y) axis.POSIXct(1,y) # is what it does axis(1, col="red") # is what it should do Remko On Mon, Oct 19, 2009 at 9:04 PM, Karl Ove Hufthammer <k...@huftis.org> wrote: > I believe I have found a bug (or at least a misfeature) in plot.POSIXct. > See the following example code. > > set.seed(1) > x=seq(1,1e8,length=100)+round(runif(100)*1e8) > y=as.POSIXct(x,origin="2001-01-01") > plot(y) > > This plots some random (date)times against their indices. The y axis > correctly shows appropriate values (years), but the x axis contains the > single number '59:58' in the lower left corner, which makes no sense. > > Compare this to a simple 'plot(x)', which shows the index numbers on the > x axis. > > I observe this with both R 2.9.2 and 2.10.0 alphas. > > If anybody can confirm that this should be considered a bug, I'll report > it in the bug system. > > -- > Karl Ove Hufthammer > > ______________________________________________ > 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. > ------------------------------------------------- Remko Duursma Post-Doctoral Fellow Centre for Plants and the Environment University of Western Sydney Hawkesbury Campus Richmond NSW 2753 Dept of Biological Science Macquarie University North Ryde NSW 2109 Australia Mobile: +61 (0)422 096908 www.remkoduursma.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.
