dd><p>logical. If <code>TRUE</code>, remove a linear trend from
    the series. This will also remove the mean.</p></dd>


<dt id="arg-demean">demean<a class="anchor" aria-label="anchor" href="#arg-demean"></a></dt>
<dd><p>logical. If <code>TRUE</code>, subtract the mean of the
    series.</p></dd>


<dt id="arg-taper">taper<a class="anchor" aria-label="anchor" href="#arg-taper"></a></dt>
<dd><p>specifies the proportion of data to taper.  A split
    cosine bell taper is applied to this proportion of the da