Concatenating matrices in a structure with same size into a 3D array.

Question

Ikmal Rosli 2023-8-21

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/2010882-concatenating-matrices-in-a-structure-with-same-size-into-a-3d-array

评论： Ikmal Rosli 2023-8-21

Hello,

I have a structure consisting of 25 matrices, all of the same sizes, 5750 x 360. I am trying to figure out how I can concatenate this array in the third dimension so that I can get an array of 5750 x 360 x 25.

x_mat.mat1=rand(100, 5);
x_mat.mat2=rand(100, 5);
x_mat.mat3=rand(100, 5);
x_mat.mat4=rand(100, 5);
structfun(@(x) cat(3, x), x_mat, UniformOutput=false)
ans = struct with fields:
    mat1: [100×5 double]
    mat2: [100×5 double]
    mat3: [100×5 double]
    mat4: [100×5 double]

I've tried this, but it returns the same structure.

Thank you in advance. :-)

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Answer 1

Bruno Luong 2023-8-21

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/2010882-concatenating-matrices-in-a-structure-with-same-size-into-a-3d-array#answer_1290447

在 MATLAB Online 中打开

x_mat.mat1=rand(100, 5);
x_mat.mat2=rand(100, 5);
x_mat.mat3=rand(100, 5);
x_mat.mat4=rand(100, 5);
c=struct2cell(x_mat);
A=cat(3,c{:});
size(A)
ans = 1×3
   100     5     4