DateTime defined by <code>from</code>. <br>
When <code>from &lt; start(x)</code> then <code>x</code> is extended backward with NAs to the starting DateTime defined by <code>from</code>.</p></dd>

  <dt>to</dt>
<dd><p>POSIX object indicating the ending time used to carry out the temporal aggregation.  <br>
When <code>to &lt; end(x)</code> then <code>x</code> is cut in time to the ending DateTime defined by <code>to</code>. <br>
When <code>to &gt; end(x)</code> then <code>x</code> is extended forward with NAs