[R] xfig boxplot (polygon) bug??

Yves Gauvreau
Tue, 13 Feb 2001 09:07:04 -0000

All I can help you with is for the code.

> boxplot.default


Yves Gauvreau
B.E.F.P. Universite du Quebec a Montreal
cyg at sympatico.ca

> -----Message d'origine-----
> De : owner-r-help at stat.math.ethz.ch
> [mailto:owner-r-help at stat.math.ethz.ch]De la part de
> e.catchpole at adfa.edu.au
> Envoye : Monday, February 12, 2001 10:52 PM
> A : r-help at stat.math.ethz.ch
> Objet : [R] xfig boxplot (polygon) bug??
>
>
> There appears to be a bug in the R xfig() driver.
>
> When I run a simple example, eg
>
> > data(InsectSprays)
> > boxplot(count ~ spray, data = InsectSprays, col =
"lightgray")
>
> the boxplot is fine. Doing the same thing after
>
> > xfig(file='test.fig')
>
> and then opening in Xfig (ver3.2 patchlevel 2) on my Linux box
> produces boxplots
> where the boxes, although correctly shaded in, have
> lost the vertical line that defines the left edge of the box. That is,
> they look like
>
>        |                         |
>        |                         |
>      -----                     -----
>           |                   |     |
>           |    instead of     |     |
>           |                   |     |
>      -----                     -----
>        |                         |
>        |                         |
>
> This doesn't sound serious, but I'm running the result through pdf
> postprocessors (mpost, then ppower4), and the result comes out as
> triangles instead of boxes!
>
> A simple workaraound, I expect, would be to define the boxes as
> 5-point polygons rather than 4-point, to force closure (sorry if I'm
> not using the right jargon here).
>
> I tried to get a look at the boxplot code to check this out, but
>
> > boxplot
>
> just produces
>
> function (x, ...)
> UseMethod("boxplot")
>
> Is there any way I can get at the boxplot code? Or is there another
> way out of my problem? I'd be very grateful for any help.
>
> I'll post this as a bug if this is confirmed.
>
> Thanks,
> Ted.
>
> Dr E.A. (Ted) Catchpole
> School of Maths & Stats                Honorary Senior Research Fellow
> University College, UNSW               Institute of Maths & Stats
> Australian Defence Force Academy       University of Kent at Canterbury
> Canberra, ACT 2600, Australia          Canterbury CT2 7NF, England
> e-catchpole at adfa.edu.au                E.A.Catchpole at ukc.ac.uk
> www.ma.adfa.edu.au/~eac
> fax: +61 2 6268 8886
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