title: Layered Bar charts in javascript
body: <p>Hi anyone ever tried creating Layered Bar chart with any Open source javascript library ? While googling out I found that people talk about stacked bar chart, but not layered chart anywhere. A Layered bar chart looks like in the image and it is supported by Java freecharts. </p>
  
  <p><img src="https://i.stack.imgur.com/KrDbD.png" alt="enter image description here"></p>
  
  <p>Any suggestion on libraries that gives the chart directly would be great. Otherwise I should go with d3.js I suppose.</p>