title: How to get xlab and ylab to work in mosaic plots in vcd package
body: <p>For some reason I cannot get xlab and ylab to work in mosaic plots in vcd package. </p>
  
  <p>I tried: </p>
  
  <pre><code>mosaic(~Sex +Survived, 
         data=Titanic,
         shade=T, 
         legend=T, 
         main="myplot", 
         labeling_args=list(abbreviate = c( Sex=2, Survived=1)) ,
         ylab="Gender", 
         xlab="survival")
  </code></pre>
  
  <p>this labels the axes "Sex" and "Survived"  respectively.</p>
  
  <pre><code>mosaic(margin.table(Titanic, c(2,4)),
         ylab="Gender", 
         xlab="survival",
         shade=T, legend=T, 
         main="myplot", 
         labeling_args=list(abbreviate = c( Sex=2, Survived=1)))
  </code></pre>
  
  <p>this also labels the axes "Sex" and "Survived"  respectively.</p>
  
  <pre><code>mosaicplot(margin.table(Titanic, c(2,4)),
             shade=T, 
             legend=T, 
             main="myplot", 
             labeling_args=list(abbreviate = c(Sex=2, Survived=1)), 
             ylab="Gender", 
             xlab="survival")
  </code></pre>
  
  <p>this labels the axes correctly, but disregards  ‘labeling_args’ </p>
  
  <p>Does anyone have any suggestions? </p>