On 20/08/2009, at 8:49 AM, Bert Gunter wrote:
Rolf:
Not sure what "reasonably thorough" means but:
? boxplot says:
...
pars a list of (potentially many) more graphical parameters,
e.g., boxwex
or outpch; these are passed to bxp (if plot is true); for details, see
there.
Well, that seems pretty clear to me, so I went to ?bxp to find in
the pars
listing:
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.
It seems to me that this (and other omitted excerpts + examples) is
at least
a reasonable answer to the query (allowing the reader to at least
infer that
bxp does not distinguish degrees of outlyingness), so I don't
understand
your criticism. Feel free to respond privately if you prefer.
I'm flabbergasted! The OP asked how to plot mild and extreme outliers
with distinct plotting symbols. The reply said to see the help for
boxplot and bxp.
Surely ***any reasonable person*** would infer from this that these help
files contain the answer to the question!!! I.e. that the help files
tell one
how to plot mild and extreme outliers with distinct plotting symbols!!!
They ***don't***. In fact it can't be done!
Instead of saying ``see the help files'' --- which leaves the
enquirer struggling
to read through a fairly large mass of somewhat obscure material,
wondering just
where in hell the information, which the reply indicates is existent,
can possibly
be located --- why not just say ``It can't be done. The boxplot
function in R
does not distinguish between mild and extreme outliers''?
If the poster asks a reasonable question, answer it, rather than
engaging in
bloody-minded obscurantism.
cheers,
Rolf Turner
-- Bert
Bert Gunter
Genentech Nonclinical Biostatisics
-----Original Message-----
From: r-help-boun...@r-project.org [mailto:r-help-boun...@r-
project.org] On
Behalf Of Rolf Turner
Sent: Wednesday, August 19, 2009 1:27 PM
To: ottorino-luca.pant...@unifi.it
Cc: Rnewbie; ERRE
Subject: Re: [R] mild and extreme outliers in boxplot
On 20/08/2009, at 3:13 AM, Ottorino-Luca Pantani wrote:
Rnewbie ha scritto:
dear all,
could somebody tell me how I can plot mild outliers as a circle(°)
and
extreme outliers as an asterisk(*) in a box-whisker plot?
Thanks very much in advance
?boxplot
or
help(bxp)
This is the sort of response that gives R-help a bad name.
I had a reasonably thorough look at these help files and saw
***nothing***
that would answer the OP's question. The information may be there
--- I'm
not sure about this --- but it is far from obvious. Explicit
reference
to the appropriate lines of the help file(s) would be useful.
cheers,
Rolf Turner
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