title: use text column from data file as points label in gnuplot
body: <p>I have a data file consisting of 2 columns with a name and value in it.</p>
  
  <pre><code>foo 0.1
  bar 0.2
  fff 0.4
  bbb 0.7
  </code></pre>
  
  <p>I want to plot this and annotate the text entry next to the data point.</p>
  
  <p>I tried </p>
  
  <pre><code>plot 'file' using 1:2 with labels 
  </code></pre>
  
  <p>but it didn't work. I guess the proble is that I have to rely on gnuplot using only the second column for y and equally spacing the x axis.</p>