ure is defined for any geometry type, but only has a real meaning
            for areal geometry types (ring, polygon, multi_polygon)
          </p></td></tr>
</table></div>
<h6>
<a name="geometry.reference.core.closure.h3"></a>
          <span class="phrase"><a name="geometry.reference.core.closure.complexity"></a></span><a class="link" href="closure.html#geometry.reference.core.closure.complexity">Complexity</a>
        </h6>
<p>
          Compile time
        </p>
<h6>
<a name="geometry.reference.core.cl