title: How to make X axis in matplotlib/pylab to NOT sort automatically the values?
body: <p>Whenever I plot, the X axis sorts automatically (for example, if i enter values 3, 2, 4, it will automatically sort the X axis from smaller to larger. </p>
  
  <p>How can I do it so the axis remains with the order I input the values i.e 3, 2, 4</p>
  
  <pre><code>   import pylab as pl
     data = genfromtxt('myfile.dat')
     pl.axis('auto')
     pl.plot(data[:,1], data[:,0])
  </code></pre>
  
  <p>I found one function, set_autoscalex_on(FALSE) but I'm not sure how to use it or whether it is what I want.
  Thanks </p>