[R] ANCOVA & Post-hoc test

From: Nicolas Poulet <poulet_at_cict.fr>
Date: Thu 15 Dec 2005 - 04:45:29 EST


Despite my search, I didn't find a post-hoc test for an ANCOVA.

I used the functions aov() and lm() to run the ANCOVA then I tried TukeyHSD() but it didn't work (because of the covariable is a continuous variable?).

Furthermore, I would like to plot the adjusted values (i.e. the values of the tested variable taking into account the covariable).

Thanks for your help!

N. Poulet

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