years long, or get the years in a ‘duration’ X.
</p>
<p>See <a class="xref" href="years.html">years</a>.
</p></dd>
</dl>
</div>
<div class="subsection-level-extent" id="Missing-Data">
<h4 class="subsection"><span>8.1.4 Missing Data<a class="copiable-link" href="#Missing-Data"> &para;</a></span></h4>
<dl class="table">
<dt>missing</dt>
<dd><p>Generic auto-converting missing value.
</p>
<p>See <a class="xref" href="missing.html">missing</a>.
</p></dd>
<dt>isnanny</dt>
<dd><p>Test if elements are NaN or Na