esian coordinate system to</span>
         <span class="comment">% natural coordinate system.</span>
         Xn = coordCartesianToNatural(this,NODE,X)

         <span class="comment">%------------------------------------------------------------------</span>
         <span class="comment">% Get integration points.</span>
         [X,W,n] = getIntegrationPoints(this,intOrder,elem)
    <span class="keyword">end</span>
</pre><h2 id="6">Public methods</h2><pre class="codeinput">    methods
        <span class="