Compare matrices from different programs

I have two matrices created from two different programs. Matrix A from program A and matrix B from program B. The matrix sizes are same and I want to compare the elements of these matrices. Is that possible? If yes, how?

Answer 1

[Jan]

If the matrices are small, you can subtract them:

A - B
abs(A- B)

If they are too large to keep the overview in the command window:

D = abs(A - B);
max(D(:))
min(D(:));

You can draw the difference:

Img = A - B;
Img = Img - min(Img(:));
Img = Img / max(Img(:));  % Normalize to [0, 1]
image(Img);

If you only want to check, if the matrices are equal:

isequal(A, B)

[Rik]

Well, this is what you get from not being clear on how you precisely want to compare the matrices ;)

[Jan]

@Rik: And the detail that the matrices are comming from "two different programs" has not been considered. I hope that fiona gets inspirated by our suggestions.

Answer 2

[Rik]

A = [3 4;8 9];
B = [3 6;0 4];
AreElementsEqual = A==B ;