[R] date Axes and formats in lattice plots

From: <Toby.Patterson_at_csiro.au>
Date: Mon 05 Jul 2004 - 12:02:43 EST

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?

Many thanks.
Toby



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https://www.stat.math.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html Received on Mon Jul 05 12:08:05 2004

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