>Passed to <code><a href="alluvial-data.html">to_lodes_form()</a></code> if <code>data</code> is in alluvia format.</p></dd>


<dt id="arg-negate-strata">negate.strata<a class="anchor" aria-label="anchor" href="#arg-negate-strata"></a></dt>
<dd><p>A vector of values of the <code>stratum</code> aesthetic to be
treated as negative (will ignore missing values with a warning).</p></dd>


<dt id="arg-aggregate-y">aggregate.y<a class="anchor" aria-label="anchor" href="#arg-aggregate-y"></a></dt>
<dd><p>Deprecated