title: Access cell value of datatable
body: <p>Can anyone help me how to access for example value of first cell in 4th column?</p>
  
  <pre><code>a b c d
  1 2 3 5
  g n m l
  </code></pre>
  
  <p>for example, how to access to value d, if that would be datatable?</p>
  
  <p>Thanks.</p>