[19296] in s-news-athena
[S] Graphical display of multiple comparisons
daemon@ATHENA.MIT.EDU (Wright, Kevin)
Wed Sep 22 18:35:03 1999
Message-Id: <C71CB7425639D311A7A40008C7286AB015B72D@carina.phibred.com>
From: "Wright, Kevin" <WRIGHTKEVI@phibred.com>
To: "'s-news@wubios.wustl.edu'" <s-news@wubios.wustl.edu>
Date: Wed, 22 Sep 1999 17:28:48 -0500
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I'm looking for ways to display information about many multiple comparisons
in a compact form.
I know how to plot confidence intervals for multiple comparisons, for
example
> mc<-multicomp(...)
> plot(mc)
With 20 treatments, this will produce about 10 pages of plots of confidence
intervals.
I'm interested in other ways to display and interpret this data. A couple
of ideas:
1. Display the treatment means along a number line and use underscores to
group non-significant means. For example:
---A--B----C-D
---- ---
--------
2. Create a matrix with cell entries that are the estimates of the
difference in means. Use a special character to denote estimates that are
significantly nonzero. For example:
A B C D
A 3 8* 10*
B 5 7
C 2
Does anybody know of S+ functions that will perform tasks like this?
Kevin Wright, Pioneer Hi-Bred Int'l
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