Horizontal stacked bar chart with chart.js

I know this is a few months old, but I thought I'd add my answer for future generations.

I was able to do without extra plugins. If you set the xAxes and yAxes to stacked:true under scales, you can create a stacked horizontal graph.

scales: {
     xAxes: [{
          stacked: true,
     }],
     yAxes: [{
          stacked: true
     }]
}

Here's a quick pen to show how I did it. http://codepen.io/jamiecalder/pen/NrROeB

Bonus: Includes code to show the values on the graph

Take a look at the fork ChartNew.js (https://github.com/FVANCOP/ChartNew.js). This has HorizontalStackedBars (and many other additions). See https://github.com/FVANCOP/ChartNew.js/wiki/050_available_graphs for how its going to look like.