title: Adjusting position of text labels in coord_polar() histogram
body: <p>I'm stuck on an small labeling issue with a series of polar histograms made in ggplot2 (circumplexes? how are these things called?).</p>
  
  <p>Here is a simplified example of how the data and the graph look:</p>
  
  <pre><code>df &lt;- data.frame(Attribute1=10, Attribute2=1, Attribute3=2,  Attribute4=6,  Attribute5=7)
  g &lt;- ggplot(melt.data.frame(df), aes(x=variable, y=value, fill=variable, label=value))
  g &lt;- g + geom_bar() + geom_text() + coord_polar()
  g
  </code></pre>
  
  <p>Which gives the following graph:
  <img src="https://i.stack.imgur.com/mxii0.png" alt="polar histogram example"></p>
  
  <p>I would like to move the text labels outwards (away from the center).</p>
  
  <p>Normally, I would adjust the position with <code>hjust</code> or <code>vjust</code> inside <code>geom_text()</code>, but it seems that, with <code>coord_polar()</code>, the result is to move all the labels up/downwards or left/rightwards, but not in/outwards.</p>
  
  <p>This may sound trivial - and probably is - but I haven't found any applicable example or workaround yet, so I apologize if this question looks silly.</p>