Re: [R] best way to calculate per-parameter differences in across-subject means

From: Dieter Menne <dieter.menne_at_menne-biomed.de>
Date: Thu 03 Aug 2006 - 02:04:52 EST

René J.V. Bertin <rjvbertin <at> gmail.com> writes:

> I have some data in a data.frame where for each of a number of
> subjects, I have scores for all of a number of symptoms.
>
> Subjects are subdivided in a number of groups, which have unequal sizes.
>
> I'd like to plot between-group differences in the scores on the
> various symptoms. Ideally, that would be in a form as would be
> produced by

....

Maybe it's a bit more than you want, but possibly you are happy with it: see the example under TukeyHSD.

summary(fm1 <- aov(breaks ~ wool + tension, data = warpbreaks)) TukeyHSD(fm1, "tension", ordered = TRUE) plot(TukeyHSD(fm1, "tension"))

Dieter



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