I plot the internal data of a class to help me debug. I use gruff to create the graphs.

The data is all similar but large values. I want to plot only the meaning full part of my data. The data should fall within a range of 9690 to 10190. To see the differences I want limit the Y plot area to the expected range.

This is my code:

  def graph
    g = Gruff::Line.new
    g.title = "#{self.class}"
    @data.each_with_index do | data, index |
      g.data(index.to_s, data)
    end
    ### Something here
    g.write("#{self.class}.png")
  end

So what should I replace Something here with?