title: D3, transition groups (<g>)
body: <p>In D3 is it possible to transition groups?</p>
  
  <p>With square or circles it works this way:</p>
  
  <pre><code>mySquare
    .transition()
    .attr("x",320);
  </code></pre>
  
  <p>but if mySquare is for example a reference to a group ("&lt; g >") it doesn't work, maybe because D3 looks for an x property of the group I was not able to retrieve.</p>
  
  <p>Can you help me? I couldn't find any docs about this topic.</p>