title: Bokeh Horizontal Stacked Bar Chart
body: <p>I am trying to convert my vertical stacked bar chart to a horizontal stacked bar chart, but I can not get the rotation to happen. I tried using hbar to create the rotation, but the chart still ends up staying in place. All tips appreciated!</p>
  
  <pre><code>from bokeh.charts import Bar, output_file, show, hplot
  from bokeh.models import HoverTool, ColumnDataSource, Range1d, LabelSet, Label
  
  # create data
  data = {
      'customer': ['Cust 1', 'Cust 2',  'Cust 1', 'Cust 3', 'Cust 1', 'Cust 2'],
      'itemSold': ['python', 'python', 'pypy', 'pypy', 'jython', 'jython'],
      'sales': [200, 600, 850, 620, 400, 550]
  }
  
  #create hover tooltip
  hover = HoverTool(tooltips=[
      ("sales", "$sales"),
      ("customer", "@customer"),
      ("itemSold", "@itemSold")
  
  ])
  
  
  # x-axis itemSold , stacking customer
  bar = Bar(data, values='sales', label='itemSold', stack='customer',
            title="Python itemSold Sampling", legend='top_right', sizing_mode = "scale_both", tools=[hover, 'wheel_zoom'])
  bar.hbar(y = data['sales'], height=0.5, right = data['customer'])
  
  output_file("stacked.html")
  show(bar)
  </code></pre>