title: D3 drawing circles on the circumference of other circle
body: <p>I was trying to build a chart which is similar to here</p>
  
  <p><a href="https://sf.relsci.com/Visualizations/davos" rel="nofollow">https://sf.relsci.com/Visualizations/davos</a></p>
  
  <p>How can i draw the circles in a circular shape?</p>