Dear List,
this may be a Newbi question and may have been asked several times, but i am too stupid to find the posts. I have a plot of values against POSIXct time steps. If I want to add a second x axis to the top margin of the plot, only numbers are at the tickmarks. Is there a straightforward way to specify the format to convert them to character representations (similar to the labels at the bottom)? x<-as.POSIXct(1:1000*(60^2),origin='01-01-1970') y=rnorm(1000) plot(x,y) axis(3) Thanks for your help Jannis ______________________________________________ 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.
