Eye Theta 45 Eye Phi 46.02 Eye Chi 0 Xmin -3 * Pi Xmax: 3 * Pi Ymin -3 * Pi Ymax 3 * Pi Zmin -0.5 Zmax 1 Xgrid 17 Ygrid 17 Ncontour 5 Frame Mode Wire Frame Only Equation: cos(sqrt(x^2 + y^2) - 0.04 * Pi)/sqrt(x^2+y^2)