Index in position 2 exceeds array bounds (must not exceed 1) - need help with getting this to work. thanks

for i = 1:NA
    for j= 1:NB
        Bxx(i,j) = ( a11(i,j)*a22(i,j)) - ( a12(i,j)*a21(i,j)) / a11(i,j);
%         Bxy(i,j) = [ a11(i,j)*a23(i,j) - a21(i,j)*a13(i,j)] / a11(i,j);
%         Bxw(i,j) = [ all(i,j)*a24(i,j) - a21(i,j)*a14(i,j)] / all(i,j);
%         Byx(i,j) = [ all(i,j)*a32(i,j) - a12(i,j)*a31(i,j)] / a11(i,j);
%         Byy(i,j) = [ a11(i,j)*a33(i,j) - a13(i,j)*a31(i,j)] / a11(i,j);
%         Byw(i,j) = [ a11(i,j)*a34(i,j) - a14(i,j)*a31(i,j)] / a11(i,j);
    end
end

[Rik]

Those numbered arrays don't bode well.

What are the sizes of those a__ variables? How did you make sure NA and NB do not exceed them?

[George Adomako Kumi]

I'm trying to make NA and NB to be equal to 20.

[Rik]

I asked 2 questions. You have answered a third.

[George Adomako Kumi]

The size of my a variables is 1x1.I have managed to make it work now. Thanks for drawing my attention to it.

I do intend to make NA and NB to be equal to 20 in then, what will your suggestion be ?

[Rik]

Your numbered variables make it look like you should be using arrays instead.

If you want NA to be 20, then you need to made sure all those a__ variables have at least 20 rows.

[George Adomako Kumi]

Thanks. Got it...