title: How to do horizontal lines from a one column file using gnuplot?
body: <p>Having a file with just one column of data like for example:</p>
  
  <p>10</p>
  
  <p>2</p>
  
  <p>34</p>
  
  <p>4.5</p>
  
  <p>16</p>
  
  <p>I'd like to plot a stack of horizontal lines as plotting a horizontal line from let's say -3 to 3 (x range) for a y value equal to the first row (10 in the example), then replot a another horizontal line ranging from x=[-3:3] with a y value equal to the second row (2 in the example), and so on.</p>
  
  <p>How can I do it?</p>