Division of two Multidimensional array

Hi

I have two multidimensional array say A (30x10x30) & B(30x10x30). I want to divide the elements of A by the corresponding elements of B.

How to do it.

I am not getting corrrect result by diving like this A./B

[Image Analyst]

That should work. Please post your arrays and tell us, for some particular location, what you're getting and what you thought you should get.

save('answers.mat', 'A', 'B');

[mukesh bisht]

Please see the attached file

Here the results is represented by variable C = A./B

[Image Analyst]

Uh, ok, but I'm still waiting for you to answer "tell us, for some particular location, what you're getting and what you thought you should get."

Like C(1,3,5) is 150 when it should be

I'll check back later.

load('matlab.mat')
C = A ./ B;
numSlices = size(C, 3);
for k = 1 : numSlices
	subplot(1, 3, 1);
	imshow(A(:, :, k), [], 'InitialMagnification', 1000);
	axis('on', 'image');
	impixelinfo;
	title('A', 'FontSize', 20);

	subplot(1, 3, 2);
	imshow(B(:, :, k), [], 'InitialMagnification', 1000);
	axis('on', 'image');
	impixelinfo;
	title('B', 'FontSize', 20);

	subplot(1, 3, 3);
	imshow(C(:, :, k), [], 'InitialMagnification', 1000);
	axis('on', 'image');
	impixelinfo;
	title('C', 'FontSize', 20);

	drawnow;
	pause(0.4);
end

[mukesh bisht]

Like C(7,1,1). The actual answer should be NAN (C = 0/0) but it shows 0.0458

[Image Analyst]

OK, I get

load('matlab.mat')
C = A ./ B;
fprintf('A(7,1,1) = %f.\n', A(7,1,1));
fprintf('B(7,1,1) = %f.\n', B(7,1,1));
fprintf('C(7,1,1) = %f.\n', C(7,1,1));

A(7,1,1) = 0.000055.

B(7,1,1) = 0.001192.

C(7,1,1) = 0.045776.

Explain why you get 0 for A and B. Did you upload the wrong data?

[mukesh bisht]

Sorry. Now I got it. Actually in Matlab workspace A(7,1,1) shows 0.000. So, this created confusion

Answer 1

[LO]

you can iterate the 2D division

A = rand(30,10,30);
B = rand(30,10,30);
sz=size(A); 
r = cell(sz(3),1);
for i = 1:sz(3)
r{i} = A(:,:,i)./B(:,:,i); % in this cell array you will have the divisions
end