title: nvd3 Multibar-Chart - not stacked
body: <p>I have no clue, why my data stream is not working correctly. I have 2 data-streams. One with negative values and one with positive values.
  The problem is, that stream 2 (blue bars) is not starting at the zero line in my chart. The bars are much to height - around 200px (hidden downwards)
  Did someone have an idea why this happens? Could it be the cause, that the streams are not equal?</p>
  
  <pre><code>nv.addGraph(function() {
  var chart = nv.models.multiBarChart();
  
  chart.xAxis
      .tickFormat(d3.format(',f'));
  
  chart.yAxis
      .tickFormat(d3.format(',.1f'));
  
  chart.multibar.stacked(true); // default to stacked
  chart.showControls(false); // don't show controls
  
  d3.select('#chart svg')
      .datum(myData.uas.data)
    .transition().duration(500).call(chart);
  
  nv.utils.windowResize(chart.update);
  
  return chart;
  </code></pre>
  
  <p>});</p>
  
  <p><a href="https://jsfiddle.net/ls007/egy89y6m/7/#&amp;togetherjs=bbvSxE9kbj" rel="nofollow">Fiddle</a></p>
  
  <p>Hope someone could give me a hint. </p>
  
  <p>Cheers K.</p>