[R] boxplot knowing Q1, Q3, median, upper and lower whisker value

[Greg Snow]

For base graphics the bxp function does the actual plotting given the statistics.

-- 
Gregory (Greg) L. Snow Ph.D.
Statistical Data Center
Intermountain Healthcare
greg.snow at imail.org
801.408.8111


> -----Original Message-----
> From: r-help-bounces at r-project.org [mailto:r-help-bounces at r-
> project.org] On Behalf Of Brian Diggs
> Sent: Thursday, September 09, 2010 1:41 PM
> To: David A.
> Cc: R-help
> Subject: Re: [R] boxplot knowing Q1, Q3, median, upper and lower
> whisker value
> 
> On 9/6/2010 8:46 AM, David A. wrote:
> >
> > Dear list,
> >
> > I am using a external program that outputs Q1, Q3, median, upper and
> > lower whisker values for various datasets simultaneously in a tab
> > delimited format. After importing this text file into R, I would like
> > to plot a boxplot using these given values and not the original
> > series of data points, i.e. not using something like
> > boxplot(mydata).
> >
> > Is there an easy way for doing this? If I am not wrong, boxplot()
> > does not accept these values as parameters.
> >
> > Cheers,
> >
> > Dave  [[alternative HTML version deleted]]
> 
> If you use ggplot2, you can specify the aesthetics lower, upper,
> middle,
> ymin, and ymax directly to variables in geom_boxplot.  Just be sure to
> set stat="identity" so that it does not try to summarize your data
> again.
> 
> --
> Brian Diggs
> Senior Research Associate, Department of Surgery
> Oregon Health & Science University
> 
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