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POPost hoc tests with ezANOVA output
 

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    <p>I tried to use <code>TukeyHSD(my_anova$aov)</code> but it gives an error:</p> <pre><code>Error in UseMethod("TukeyHSD") : no applicable method for 'TukeyHSD' applied to an object of class "c('aovlist', 'listof')" </code></pre> <p>Google says that there is no way to post hoc with 'aovlist'. But maybe you have any idea about post hoc with ezANOVA output.</p> <p>Example:</p> <pre><code>require(ez) data(ANT) rt_anova = ezANOVA(data = ANT[ANT$error==0,], dv = rt, wid = subnum, within = cue,return_aov = TRUE) </code></pre> <p>Try to use multcomp:</p> <pre><code>require(multcomp) glht(my_anova$aov, linfct = mcp(cue = "Tukey")) Error in model.matrix.aovlist(model) : ‘glht’ does not support objects of class ‘aovlist’ Error in factor_contrasts(model) : no ‘model.matrix’ method for ‘model’ found! </code></pre> <p>Try to use <code>lme</code>:</p> <pre><code>require(nlme) lme_velocity = lme(rt ~ cue, data=ANT[ANT$error==0,], random = ~1|subnum) Error in .Call("La_chol", as.matrix(x), PACKAGE = "base") : Incorrect number of arguments (1), expecting 2 for 'La_chol' &gt; sessionInfo() R version 2.15.2 (2012-10-26) Platform: i386-w64-mingw32/i386 (32-bit) locale: [1] LC_COLLATE=Russian_Russia.1251 LC_CTYPE=Russian_Russia.1251 LC_MONETARY=Russian_Russia.1251 LC_NUMERIC=C LC_TIME=Russian_Russia.1251 attached base packages: [1] splines stats graphics grDevices utils datasets methods base other attached packages: [1] nlme_3.1-108 multcomp_1.2-15 survival_2.37-2 mvtnorm_0.9-9994 ez_4.1-1 stringr_0.6.2 scales_0.2.3 reshape2_1.2.2 plyr_1.8 memoise_0.1 [11] mgcv_1.7-22 lme4_0.999999-0 Matrix_1.0-10 lattice_0.20-13 ggplot2_0.9.3 car_2.0-15 nnet_7.3-5 MASS_7.3-23 loaded via a namespace (and not attached): [1] colorspace_1.2-1 dichromat_2.0-0 digest_0.6.2 grid_2.15.0 gtable_0.1.2 labeling_0.1 munsell_0.4 proto_0.3-10 RColorBrewer_1.0-5 [10] stats4_2.15.0 tools_2.15.0 </code></pre>
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    1. COAnd please read this: [How to ask](http://stackoverflow.com/questions/how-to-ask), and [Reproducible example](http://stackoverflow.com/questions/5963269/how-to-make-a-great-r-reproducible-example)
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