On Sunday 04 July 2004 21:02, [EMAIL PROTECTED] wrote: > All, > > I have some data of animal movements that I'm plotting using xyplot() > from lattice. I want to have the date (class POSIXct object) on the > Y-axis and the animals longitude on X-axis. Eg. > > xyplot(date ~ longitude, groups = animal, data = my.data) > > with data like: > > animal ptt year month day lon date > 125 03P0014 13273 2003 7 10 150.38 2003-07-10 14:03:48 > 126 03P0192 20890 2003 7 10 151.13 2003-07-10 14:00:47 > 127 03P0197 30466 2003 7 10 150.74 2003-07-10 14:02:21 > ...etc > > It all works fine except for the format of the dates that gets > displayed. > > I am not sure what I need to change within the lattice frame work to > get a specific date format (eg. "%Y-%-m-%d"). Does anyone have any > tips or, even better, some example code that they could pass on?
For R 1.9.0 and above, you should be able to do this with xyplot(date ~ longitude, groups = animal, data = my.data, scales = list(y = list(format = "%Y-%-m-%d"))) Deepayan ______________________________________________ [EMAIL PROTECTED] mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html