[R] beginner plotting with dates

ripley@stats.ox.ac.uk ripley at stats.ox.ac.uk
Tue Mar 11 15:37:51 CET 2003

On Tue, 11 Mar 2003, Rebecca Freeman Grais wrote:

> I am a beginner and have a question about plotting dates.  I am creating 
> a very simple boxwhisker plot , boxplot(Total Case~Month).  When the 
> boxplot appears, the months are re-ordered alphabetically.  I would like 
> to be able to preserve the order, i.e. Jan, Feb, March, etc.  Is there a 
> way to set the x-axis so that it is not automatically re-ordered? Thanks 
> in advance for your help.

No, but you can set up Month (a factor?) with the levels in the order you 
want, and then boxplot will follow.  See ?factor.

Brian D. Ripley,                  ripley at stats.ox.ac.uk
Professor of Applied Statistics,  http://www.stats.ox.ac.uk/~ripley/
University of Oxford,             Tel:  +44 1865 272861 (self)
1 South Parks Road,                     +44 1865 272866 (PA)
Oxford OX1 3TG, UK                Fax:  +44 1865 272595

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