[R] mild and extreme outliers in boxplot

Ottorino-Luca Pantani ottorino-luca.pantani at unifi.it
Thu Aug 20 09:25:01 CEST 2009

I'm very sorry for all this, but still serene.

I'm (trying) to use R since may be 5 or 6 years now.
What I learned from this list is that you have to show some code to let 
others to help you out, a thing that Rnewbye did not in this particular 

I had a look myself at the help pages and see that "something" was there 
that could help Rnewbye.
In particular

> outlty, outlwd, outpch, outcex, outcol, outbg: outlier line
>                type, line width, point character, point size expansion,
>                color, and background color.  The default 'outlty=
>                "blank"' suppresses the lines and 'outpch=NA' suppresses
>                points.
My answer was somehow provocative, but I was ready to help, not to 
patronize (as many times I saw on this list).

I tried myself to change the appearance of the circles and other aspect 
of the plot, uncorrectly assuming that it could be extended to the 
problem of Rnewbye.

I surely made a mistake, and I apologize for this. This is is my only fault.

BUT PLEASE do not forget that if Rnewbye answered to my post (with a 
piece of code for example) I would have helped him. As I was always 
helped, harshly or not.


> This is the sort of response that gives R-help a bad name.
I did not know that R-help had a bad name.
I myself received sometimes some harsh answers, but never lamented about.

Gabor Grothendieck ha scritto:
> I agree its not completely obvious from that answer but that
> does not mean the responder deserves to be attacked.
> The circle part is actually the default and albeit with difficulty
> the help files do give the info we need to produce this:
> bp <- boxplot(c(1:50, 80, 100, 200), outpch = NA)
> with(bp, points(group, out, pch = c(1, 1, 8)))
> which can be suitably generalized for other situations.
> On Wed, Aug 19, 2009 at 8:31 PM, Rolf Turner<r.turner at auckland.ac.nz> wrote:
>> I despair.  ..........

Ottorino-Luca Pantani, Università di Firenze
Dip. Scienza del Suolo e Nutrizione della Pianta
P.zle Cascine 28 50144 Firenze Italia
Tel 39 055 3288 202 (348 lab) Fax 39 055 333 273 
OLPantani at unifi.it  http://www4.unifi.it/dssnp/

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