title: how can I create new ID column using R
body: <p>I am working on csv file and trying to assign new id of rows with No ID of the whole csv file.</p>
  <pre><code>what I have          I would like to create NewID Number
  Id number   -------&gt;      NewId number
  1245                        1245
  1367                        1367
  NoID                        NoID_1
  1468                        1468
  NoID                        NoID_2
  NoID                        NoID_3
  1456                        1456
  </code></pre>