title: Post hoc tests with ezANOVA output
body: <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>