MATLAB: How to store data in matrix form total up all the value of Z

matrixsum

Hello everyone,
I have problem about how to store value of Z_wire in a matrix form. Here is my code,
function [ inductance ] = inductance( N,w,h,d_in,s)
u = pi*4*10.^-7;
X= 2*10.^-7;
r_in = d_in/2;
p = w+s;
k = w+h;
%THE LENGHTH AND THE DISTANCE OF THE TRACKS FROM CENTER: 
z(1:2,1)  = [r_in     r_in];
z(1:2,2)  = [d_in    -r_in];
z(1:2,3)  = [d_in    -r_in];
z(1:2,4)  = [r_in+p   r_in];
if N==1
    z(1:2,5)  = [r_in     r_in+p];
else
    z(1:2,5)  = [d_in+p     r_in+p];
end  
for i = 6:1:4*N+1
    z(1:2,i)  = [z(1,i-4)+2*p     z(2,i-4)+ sign(z(2,i-4))] ;   
    if i==4*N+1
        z(1:2,i)  = [z(2,i-1)         z(2,i-4)+  sign(z(2,i-4))] ;  
    end
end
for i = 1:1:4*N+1
    Z_wire(1:3,i) = [z(1,i)  w    h];
end
for i = 1:1:4*N+1
    Z_wire = X*(log((2)*z(1,i)/0.22/k))- 1.25 + ((k/3*z(1,i))+ (u/4))
end
A = sum(Z_wire)
end
i already run this code and got the value of Z_wire in the form of this Z_wire =
    2.7500
Z_wire =
    6.7500
Z_wire =
    6.7500................
and the value of A is equal to the last value of Z_wire instead of it total value. Can anybody help me to correct my code?

Best Answer

Apart from z all of the other variables appear to be scalar, so you should be able to vectorize it:
out = X*(log(2*z(1,:)/0.22/k))- 1.25 + ((k/3*z(1,:))+ (u/4))
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