matlab 绘制圆锥螺旋线

v=20;
t=[0:0.01*pi:50*pi];
alpha=pi/6;
omega=pi/6;
x=v*sin(alpha)*t.*cos(omega*t);
y=v*sin(alpha)*t.*sin(omega*t);
z=v*cos(alpha)*t;

plot3(x,y,z,'r','linewidth',2)

grid on