mch04-41.txt

matlab 图象处理

极坐标系下的f函数的轮廓图

[th,r] = meshgrid((0:5:360)*pi/180,0:.05:1);
[X,Y] = pol2cart(th,r);
Z = X+i*Y;
f = (Z.^4-1).^(1/4);
contour(X,Y,abs(f),30)
axis equal
xlabel('实部','FontSize',14);
ylabel('虚部','FontSize',14);
h = polar([0 2*pi], [0 1]);
delete(h)
hold on
contour(X,Y,abs(f),30)