title: Leaflet.js+d3.js circles with transition
body: <p>I am trying to plot circles in Leaflet.js (a webmapping app), following  <a href="http://bost.ocks.org/mike/leaflet/" rel="nofollow">http://bost.ocks.org/mike/leaflet/</a> seems not to be dificult, but I'm having strange problems :.(  that you can see here: <a href="http://bl.ocks.org/3047025" rel="nofollow">http://bl.ocks.org/3047025</a></p>
  
  <p>In fact here you can see simple circles  and works fine if zooming (double click on map) and so on. But I want these features to be circles instead of paths. I think it is not possible (?)</p>
  
  <p>I would like to have circles so I can apply transitions (from radius 0 to X, change color, gravities), events and so on.</p>
  
  <p>Are these transitions in Circles+Leaflet.js possible?? as far as I tested, with paths it is not.</p>
  
  <p>thanks in advance,</p>
  
  <p>Pere</p>