title: Rickshaw Stacked Multi-graph
body: <p>I am working with this <a href="https://gist.github.com/swilcox/6695849" rel="nofollow noreferrer">multi-graph Dashing widget</a>.  It works correctly, but it uses only two data series and I want to add one more.  I have modified the .coffee file to</p>
  <pre><code>    class Dashing.Mgraph extends Dashing.Widget
   
    @accessor 'current', -&gt;
      return @get('displayedValue') if @get('displayedValue')
      points = @get('points')
      if points
        points[0][points[0].length - 1].y + ' / ' + points[1][points[1].length - 1].y ' / ' + points[2][points[2].length - 1].y
   
    ready: -&gt;
      container = $(@node).parent()
      # Gross hacks. Let's fix this.
      width = (Dashing.widget_base_dimensions[0] * container.data(&quot;sizex&quot;)) + Dashing.widget_margins[0] * 2 * (container.data(&quot;sizex&quot;) - 1)
      height = (Dashing.widget_base_dimensions[1] * container.data(&quot;sizey&quot;))
      @graph = new Rickshaw.Graph(
        element: @node
        width: width
        height: height
        renderer: 'area'
        stroke: false
        series: [
          {
          color: &quot;#fff&quot;,
          data: [{x:0, y:0}]
          },
          {
              color: &quot;#222&quot;,
              data: [{x:0, y:0}]
          },
          {
              color: &quot;#333&quot;,
              data: [{x:0, y:0}]
          }
        ]
      )
   
      @graph.series[0].data = @get('points') if @get('points')
   
      x_axis = new Rickshaw.Graph.Axis.Time(graph: @graph)
      y_axis = new Rickshaw.Graph.Axis.Y(graph: @graph, tickFormat: Rickshaw.Fixtures.Number.formatKMBT)
      @graph.renderer.unstack = true
      @graph.render()
   
    onData: (data) -&gt;
      if @graph
        @graph.series[0].data = data.points[0]
        @graph.series[1].data = data.points[1]
        @graph.series[2].data = data.points[2]
        @graph.render()
  </code></pre>
  <p>However, when I run dashing, nothing it displayed (not even my other widgets).  It is just a blank screen.  Can anyone tell me what is going on here?</p>
  <p>EDIT:</p>
  <p>I have isolated the problem more.  It seems that everything works until I add the third data series in <code>series:</code> It seems to be this that causes it to not work.</p>