title: OpenRefine: Fill down with increasing counter
body: <p>Is it possible in OpenRefine to fill down blank cells with a counter instead of copying the top non-blank value? </p>
  
  <p>In this example image:</p>
  
  <p><a href="https://i.stack.imgur.com/bEayF.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/bEayF.jpg" alt="example open refine column with some cells filled with 1 and the other with blanks"></a></p>
  
  <p>Or here the same example as typed text - image this as a column from top to bottom:</p>
  
  <pre><code>1
  1
  blank
  1
  blank
  blank
  blank
  blank
  blank
  1
  </code></pre>
  
  <p>I would like to see the column filled as follows (again, imagine top to bottom):</p>
  
  <pre><code>1
  1
  2
  1
  2
  3
  4
  5
  6
  1
  </code></pre>
  
  <p>Thanks, help is very much appreciated.</p>