How do i extract data from 3D matrix?

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Prakash Raut
Prakash Raut 2021-11-22
回答： Voss 2021-11-23
I have a matrix of size 256*256*256, i want to create a 2D matrix whose each row has information from the z direction of the original matrix, how do i do it?
  2 个评论
James Tursa
James Tursa 2021-11-22
编辑：James Tursa 2021-11-22
Please give us a small example of what you want. E.g., start with a 2x2x2 array and then show us the resulting 2x2 matrix you want as an output. Maybe all you need is sum(matrix,3) or mean(matrix,3), but we can't tell from what you have written so far.
Prakash Raut
Prakash Raut 2021-11-23
编辑：Prakash Raut 2021-11-23
Hi James,
Here is an example of what i want (only my A is 256*256*256)
>> A
A(:,:,1) =
1 2
3 4
5 6
A(:,:,2) =
7 8
9 10
11 12
A(:,:,3) =
13 14
15 16
17 18
>> iwant
iwant =
1 2 3 4 5 6
7 8 9 10 11 12
13 14 15 16 17 18

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采纳的回答

Voss
Voss 2021-11-23
[m,n,~] = size(A);
newA = reshape(permute(A,[2 1 3]),m*n,[]).';

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