 <p>This would be a comment but I don't have the necessary reputation.</p> <p>See this <a href="https://github.com/mbostock/d3/issues/1410" rel="nofollow">d3 issue on github</a>. Is this what you're looking for?</p> <p>It's in the 3.3 milestone and the current version is 3.2.8. So, hopefully it won't be too much longer.</p>