how to plot radiation pattern of a rectangular patch antenna using matlab

sir, i want to plot radiation patterns of rectangular patch antenna both in e-plane and h-plane using matlab. i tried my level best but was not able to make it out. im not getting correct plot..... model plot was to be as shown here..... plz help me. thanx

finally i suceeded in getting the plots correctly......

hi i have the same problem is it possible to shre your matlab code? i want to plot farfield result wich i get from cst (i have numbers in db for each theta ) i just use polar (theta,farfield) comment but my 0 position and 90 ,.. arent same as a farfield plot .what should i do?