Polar map to cartesian grid

Hi,

I'm working with data in polar coordinates:

rr=vector of distances, 1x2029;

bearings=angles, 1x180;

TLp= z value at each rr,bearings , 2029x180

I've tried using pol2cart:

[xx,yy,zz]=pol2cart(bearings,rr,TLp);

But is not working because all the vector have to be the same size, any clues of how to solve it?