how to use technique to save value in final matrix - matlab coding?

I have duct simulation parameter as following

Nmod = 5; % modes in duct 1 to 5

L = 1.2; % length of duct

K = 0.051; % impedance at one end

zi = 0.315;

zm = 0.775;

c = 340 ;

roh = 1.225;

S = 1;

eta =1 ;

betan = -(1:Nmod)*pi/L;

alfa = 1/(2*L)*log((1-K)/(1+K));

%****and formulas for matrices*******

Anr = c * [alfa betan; -betan alfa]; % formula for Anr matrices

Ani = c*eta*[1 0;0 1];

An = [Anr -Ani ; Ani Anr]; % Anr and Ani matrices pack in An

i want to do this simulation for Nmod = 5 times and save the An value for each mode 1,2,3,4,5 in final Ai matrix ?

how should i do this in matlab?

Answer 1

[Pourya Alinezhad]

with a for loop you can write following code: for kk=1:Nmod {all your code goes here} Ai(kk)=An; end

so Ai(1) will hold An for Nmod=1 ,Ai(2) will hold An for Nmod=2 and so on....