# File tk/lib/tkextlib/tcllib/plotchart.rb, line 355
    def initialize(*args) # args := ([parent,] xaxis, yaxis, [, step] [, keys])

                          # xaxis := Array of [minimum, maximum]

                          # yaxis := Array of [minimum, maximum]

                          # step := Float of stepsize | "noaxes" | :noaxes

      if args[0].kind_of?(Array)
        @xaxis = args.shift
        @yaxis = args.shift

        if args[0].kind_of?(Hash)
          @stepsize = :noaxes
        else
          @stepsize = args.shift
        end

        super(*args) # create canvas widget

      else
        parent = args.shift

        @xaxis = args.shift
        @yaxis = args.shift

        if args[0].kind_of?(Hash)
          @stepsize = :noaxes
        else
          @stepsize = args.shift
        end

        if parent.kind_of?(TkCanvas)
          @path = parent.path
        else
          super(parent, *args) # create canvas widget

        end
      end

      @chart = _create_chart
    end

# File tk/lib/tkextlib/tcllib/plotchart.rb, line 400
    def plot(type, *args)
      self.__send__("plot_#{type.to_s.tr('-', '_')}", *args)
    end

# File tk/lib/tkextlib/tcllib/plotchart.rb, line 414
    def plot_circle(*args) # args := xc, yc, radius, color

      tk_call_without_enc(@chart, 'plot', 'circle', *(args.flatten))
      self
    end

# File tk/lib/tkextlib/tcllib/plotchart.rb, line 419
    def plot_filled_circle(*args) # args := xc, yc, radius, color

      tk_call_without_enc(@chart, 'plot', 'filled-circle', *(args.flatten))
      self
    end

# File tk/lib/tkextlib/tcllib/plotchart.rb, line 409
    def plot_filled_rectangle(*args) # args := x1, y1, x2, y2, color

      tk_call_without_enc(@chart, 'plot', 'filled-rectangle', *(args.flatten))
      self
    end

# File tk/lib/tkextlib/tcllib/plotchart.rb, line 404
    def plot_rectangle(*args) # args := x1, y1, x2, y2, color

      tk_call_without_enc(@chart, 'plot', 'rectangle', *(args.flatten))
      self
    end