MATLAB: How to plot multiple polar graph

Question

How can I plot multiple polar diagram in one graph?

Answer 1

The HOLD command should work:

http://www.mathworks.com/help/releases/R2012a/techdoc/ref/hold.html

t = 0:.01:2*pi;
polar(t,cos(2*t).*cos(2*t),'--k')
hold on
polar(t,sin(2*t).*cos(2*t),'--r')