title: How to combine two lists to plot coordinate pairs?
body: <p>I have read x-data (from text files) into list1, and y-data similarly into list2: </p>
  
  <pre><code>list1 = { 0.0,    0.172,  0.266, ..}
  list2 = {-5.605, -5.970, -6.505, ..} 
  </code></pre>
  
  <p>How do I combine the two lists in order to plot points {0.0, -5.605}, {0.172, -5.970}, {0.266, -6.505},....</p>