Can you explain more thoroughly what your difficulty is?
t = linspace(0,2*pi);
a = 0.3; b = 2; r = rand;
z = a*t;
x = r*cos(b*t);
y = r*sin(b*t);
plot3(x,y,z)
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!