4 
0065 <span class="comment">%-------------------------------------------------</span>
0066 <span class="comment">% set grids in zeta and theta</span>
0067 <span class="comment">%-------------------------------------------------</span>
0068 theta = -pi:2*pi/nTheta:pi; nTheta=numel(theta);
0069 zeta  = zeta_min:(zeta_max-zeta_min)/nZeta:zeta_max;
0070 <span class="keyword">if</span>(zeta_min==zeta_max)
0071   zeta = zeta_min;
0072   nZeta = 1;
0073 <span class="keyword">else</span>
0074   nZeta = nZeta+1;
0