title: Change Date print format from yyyy-mm-dd to dd-mm-yyyy
body: <p>I am trying to convert the format of the dates from <code>yyyy-mm-dd</code> to <code>dd-mm-yyyy</code> format. For example:</p>
  <pre><code>D &lt;- &quot;06.12.2012&quot;  
  D &lt;- as.Date(D, &quot;%d.%m.%Y&quot;)
  D
  # [1] &quot;2012-12-06&quot;
  </code></pre>
  <p>How can I convert it to &quot;06-12-2012&quot;?</p>