[R] date library and notched boxplots

Don MacQueen macq at llnl.gov
Thu Sep 16 16:52:10 CEST 2004

Try formatting the dates as character strings, and supplying those to 

At 2:16 PM +0000 9/16/04, smestrella at juno.com wrote:
>I'm having problems using the date library with notched boxplots.  I 
>have separate month, day, and year columns and would like to plot 
>the columns as a date against other variables.  I have used the 
>mdy.date(month,day,year) command before with plot(), but it doesn't 
>seem to work with boxplot().  Instead of the dates along the x-axis, 
>I get a list of numbers.  Maybe I have the code wrong?  I have used 
>the help() menu in R, but with no success.
>Can somebody please help?
>R-help at stat.math.ethz.ch mailing list
>PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html

Don MacQueen
Environmental Protection Department
Lawrence Livermore National Laboratory
Livermore, CA, USA

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