ry spatial weights matrix. See <code><a href="shape2mat.html">shape2mat</a></code>.</p></dd>


<dt>nsa</dt>
<dd><p>Logical. Default of <code>nsa = FALSE</code> excludes eigenvectors capturing negative spatial autocorrelation.
Setting <code>nsa = TRUE</code> will result in a candidate set of EVs that contains eigenvectors representing positive and negative SA.</p></dd>


<dt>threshold</dt>
<dd><p>Defaults to <code>threshold=0.2</code> to exclude eigenvectors representing spatial autocorrelation levels that a