s="keyword">if</span> <a href="hasxy.html" class="code" title="function yn = hasxy(g)">hasxy</a>(h1) &amp;&amp; <a href="hasxy.html" class="code" title="function yn = hasxy(g)">hasxy</a>(h2)
0027     xy1 = <a href="getxy.html" class="code" title="function z = getxy(g)">getxy</a>(h1);
0028     xy2 = <a href="getxy.html" class="code" title="function z = getxy(g)">getxy</a>(h2);
0029     
0030     xy = zeros(n,4);
0031     
0032     <span class="keyword">for</span> u=1:n
0033         [u1,u2] = <a href="#_sub1"