steer and array functions did not work with my matlab

steer and array functions did not work with my matlab 7.8.0 (R2009a) when i'm trying to run this simple program

clear all clc

d=1/4; kd=2*pi*d; i = 1:5; psi = -2*kd*i/5; zi = exp(1i*psi); a = fliplr(poly(zi)); a = steer(d, a, 0); [g, ph] = array(d, a, 400); dbz(ph, g, 45, 40);

need help plz

Answer 1

[Azzi Abdelmalek]

steer is not a built-in function, get it from FEX http://www.mathworks.com/matlabcentral/fileexchange/19030-smart-antenna-systems-for-mobile- communications/content/Steer.m

[Amgad Salama]

What about array too? Is it a built-in function too? Thanks for ur time

[Azzi Abdelmalek]

You can check by typing

help array

and try to find it with google by typing : array matlab

[Amgad Salama]

How can I solve this problem? My MATLAB did not support both?

Answer 2

[Image Analyst]

Here's some help: http://www.mathworks.com/matlabcentral/answers/13205-tutorial-how-to-format-your-question-with-markup

and http://www.mathworks.com/matlabcentral/answers/6200-tutorial-how-to-ask-a-question-on-answers-and-get-a-fast-answer

I don't know how to help you because you did not tell us what "did not work" means. Did it run but just give you some result that was not what you expect? Did it partially run and then throw an error? If so, tell us what the error is. Paste all the red text that shows up in the command window. You need to give us more to work with. Don't make us guess what "did not work" meant.

What does it say when you do this on the command line:

which -all steer

If it doesn't find it, then search your all your m-files for "steer" (with the "Find Files" button) and see if any of the lines it finds is preceded by a "function" keyword, because it might be defined inside a function rather than being a separate m-file called steer.m. If you still don't find it, then you don't have it.