dt><dd>the convex hull</dd>
<dt><span class="strong">Throws:</span></dt>
<dd><code><a href="../../../../../../../../org/apache/commons/math3/exception/NullArgumentException.html" title="class in org.apache.commons.math3.exception">NullArgumentException</a></code> - if the input collection is <code>null</code></dd>
<dd><code><a href="../../../../../../../../org/apache/commons/math3/exception/ConvergenceException.html" title="class in org.apache.commons.math3.exception">ConvergenceException</a></code> - if ge