title: how to set width on seaborn barplot
body: <p>I would like to set the width of each bar on the barplot based on the number of times the column <code>chrom</code> has a particular value.
  I am setting width bars to be a list of occurrences:</p>
  
  <pre><code>list_counts =  plot_data.groupby('chrom')['gene'].count()
  
  widthbars = list_counts.tolist()
  </code></pre>
  
  <p>Plotting the barplot as:</p>
  
  <pre><code>ax = sns.barplot(x = plot_data['chrom'], y = plot_data['dummy'], width=widthbars)
  </code></pre>
  
  <p>This gives me an error:</p>
  
  <pre><code>TypeError: bar() got multiple values for keyword argument 'width'
  </code></pre>
  
  <p>Is the width variable being set somewhere implicitly?
  How do I get the widths of each bar to be different?</p>