ection matrix.
        </p>
<h6>
<a name="geometry.reference.de9im.de9im_matrix.h0"></a>
          <span class="phrase"><a name="geometry.reference.de9im.de9im_matrix.description"></a></span><a class="link" href="de9im_matrix.html#geometry.reference.de9im.de9im_matrix.description">Description</a>
        </h6>
<p>
          This matrix can be used to express spatial relations as defined in Dimensionally
          Extended 9-Intersection Model.
        </p>
<h6>
<a name="geometry.reference.de9im.de9im_matrix