keyword">end</span>
0020 
0021 <a href="add.html" class="code" title="function add(g,i,j)">add</a>(g,more_edges);
0022 
0023 <span class="comment">% create an embedding</span>
0024 <a href="rmxy.html" class="code" title="function rmxy(g)">rmxy</a>(g);
0025 
0026 <span class="comment">% inner ring of vertices</span>
0027 t = (0:n-1)*2*pi/n;
0028 x = n * cos(t)/6;
0029 y = n * sin(t)/6;
0030 xy1 = [x',y'];
0031 
0032 <span class="comment">% outer ring of vertices</span>
0033 x = (n+6)*cos(t)/6;
0034 y = (n+6)