>y</code> must be specified if <code>x</code> is a numeric vector.</p></dd>


<dt>by_rows</dt>
<dd><p>Logical. If <code>x</code> is a matrix, should distances be calculated by rows?</p></dd>

</dl></div>
    <div id="value">
    <h2>Value</h2>
    

<p>If <code>x</code> is a matrix, this returns an square and symmetric matrix. 
The i,j entries correspond to the Hellinger Distance between the rows of <code>x</code></p>
 

<p>(or the columns of <code>x</code> if <code>by_rows = FALSE</code>). If <code>x</code