title: Remove whiskers in box-whisker-plot
body: <p>Is there a straightforward way to remove the whiskers from a box-whisker-plot in <code>ggplot2</code> in <code>R</code>? I'd like to keep only the boxes themselves.</p>
  
  <p>MWE:</p>
  
  <pre><code>library("ggplot2")
  p &lt;- ggplot(mtcars, aes(factor(cyl), mpg))
  p + geom_boxplot(outlier.size = 0)
  </code></pre>