Phasor representation of antenna array

Hi Guys
I am trying to represent array factor using phasor representation in Matlab (ref Balanis)
Can anybody suggest me how to represent contribution of each element of antenna array in phasor form using Matlab

I want each phasor to start from end point of previous phasor, where each antenna element has particular phasor at fixed observation angle

Pls let me know if someone has an idea abt it