How to restrict the polar plot angle from 0 to pi matlab?

How can we restrict the polar plot angle from o to pi (o to 180 degrees)? Usually it is from 0 to 2*pi

Answer 1

[Joseph Cheng]

I don't recall there is a built in function or parameter to do this but a very quick search on the "file exchange" brought up this submitted function

http://www.mathworks.com/matlabcentral/fileexchange/27230-half-polar-coordinates-figure-plot-function-halfpolar