Export 2 Dimension out of a 3 dimensionoal Array
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Hi
I hava a 3D Array. Now I like to save the content of the 3d array in n 2d arrays
2dArray = zeros(size(3dArray([1],:,:)));
for z = 1: size(3dArray(:)
2dArray(z)=3dArray(z,:,:)
end
What am I doing wrong?
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Answers (1)
Star Strider
on 8 Nov 2021
I am not certain what is the desired result.
Usually, the intent is to separate the ‘pages’ (third dimension) of the array into separate 2D arrays.
Likely the best option for that is —
Array3D = randi(9, 3, 4, 4);
Array3D(:,:,2) % Display Page (Dleete Later)
A3dsz = size(Array3D)
Arrays2D = mat2cell(Array3D, A3dsz(1), A3dsz(2), ones(1,A3dsz(3)));
Arrays2D{2} % Display Result
Make appropriate changes to get the desired result.
.
9 Comments
Star Strider
on 8 Nov 2021
The code in Comment overwrites ‘data_2D’ in every loop iteration. Only one (the last) 2D matrix created will result.
My code produces 3 separate matrices as cell arrays.
A small addition to it will squeeze all of them as well —
Array3D = randi(9, 3, 5, 4);
Array3D(2,:,:); % Display Page (Delete Later)
squeeze(Array3D(2,:,:)) % Display Page (Delete Later)
A3dsz = size(Array3D);
Arrays2D = mat2cell(Array3D, ones(1,A3dsz(1)), A3dsz(2), A3dsz(3));
Arrays2D{2}; % Display Result
Arrays2D = cellfun(@squeeze, Arrays2D, 'Unif',0); % Display Result
Arrays2D{2}
.
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