Iterate values into array

Hi folks,

I have this data,

time = tbl.time;
Vv1 = tbl.Vv1;
Vv2 = tbl.Vv2;
IR6 = tbl.IR6;
f = [];
R  = [];
Ratio = [];
L=[];
M=[];
for x = 3:height(Vv1)
   G = tbl.Vv2(x)/tbl.IR6(x);
   R(x) =[G];
   Ratio = R(x);
   
end
xold=1
for i=1:length(Ratio);
    
    xnew = ((xold-xold^2)*Ratio(i)) ;
    L(i)=xnew;
    M(i)=xold;
    xold=xnew;

end

but for some reason each iteration of xnew and xold arent added to L or M ?

[Adam Danz]

If you provide tbl within a mat file it will be much easier to troubleshoot.

[KSSV]

xold=1
for i=1:length(Ratio);    
    xnew = ((xold-xold^2)*Ratio(i)) ;

The above line gives xnew as zero.....this what you want? You need to rethink on your logic.

for x = 3:height(Vv1)
   G = tbl.Vv2(x)/tbl.IR6(x);
   R(x) =[G];
   Ratio = R(x);   
end

The above lines, you need not to use loop.

[Peter Perkins]

I don't think either of these loops is necessary. Edward, you should try to rewrite your code with vectorixed operations, it will be faster, shorter, easier to read, and easier to debug.