code: def bar_chart(
      self, label=0, value=1, path=None, width=None, height=None
  ):
      """
      Render a bar chart using :class:`leather.Chart`.
  
      :param label:
          The name or index of a column to plot as the labels of the chart.
          Defaults to the first column in the table.
      :param value:
          The name or index of a column to plot as the values of the chart.
          Defaults to the second column in the table.
      :param path:
          If specified, the resulting SVG will be saved to this location. If
          :code:`None` and running in IPython, then the SVG will be rendered
          inline. Otherwise, the SVG data will be returned as a string.
      :param width:
          The width of the output SVG.
      :param height:
          The height of the output SVG.
      """
      if type(label) is int:
          label_name = self.column_names[label]
      else:
          label_name = label
  
      if type(value) is int:
          value_name = self.column_names[value]
      else:
          value_name = value
  
      chart = leather.Chart()
      chart.add_x_axis(name=value_name)
      chart.add_y_axis(name=label_name)
      chart.add_bars(self, x=value, y=label)
  
      return chart.to_svg(path=path, width=width, height=height)
  
label_desc: Use image node_id 1 for calling a global function with example usage: bar_chart(label, value, path, width, height) and returns: chart