title: Converting from POSIXct to character in R
body: <p>I have a POSIXct datetime column in a file. </p>
  
  <pre><code>$date
  [1] "POSIXct" "POSIXt" 
  "2005-10-13 14:13:08 UTC"
  </code></pre>
  
  <p>I would like to convert it to character column. </p>
  
  <p>Any ideas?</p>