How i can combine three or more than three matrix?

Question

Akash Pal 2021-8-10

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/895487-how-i-can-combine-three-or-more-than-three-matrix

编辑： Stephen23 2021-8-10

采纳的回答： Stephen23

y=[repmat(x1,size(x2,1),1),repelem(x2,size(x1,1),1)];

I am writing this code for combining two matrix where the row number is different but column is same .

My question is how i can combine more than two matrix where their row number is differnt but column is same ?

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Answer 1

Stephen23 2021-8-10

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https://ww2.mathworks.cn/matlabcentral/answers/895487-how-i-can-combine-three-or-more-than-three-matrix#answer_764102

编辑：Stephen23 2021-8-10

在 MATLAB Online 中打开

Note that you will run out of memory very quickly as you increase the number of matrices.

format compact
inp = {rand(3,4),rand(4,4),rand(5,4)}; % all matrices in one cell array.
celldisp(inp)
inp{1} =
    0.3652    0.5458    0.7328    0.9886
    0.1774    0.4146    0.6908    0.7239
    0.5397    0.1625    0.8757    0.0996
inp{2} =
    0.4526    0.4298    0.2415    0.8247
    0.5996    0.3380    0.2754    0.7322
    0.2394    0.6964    0.4858    0.6903
    0.1400    0.8696    0.7921    0.3204
inp{3} =
    0.3385    0.7161    0.8820    0.6369
    0.9931    0.9668    0.0144    0.1382
    0.8860    0.5127    0.3950    0.9405
    0.0639    0.5230    0.1287    0.5097
    0.7254    0.0057    0.9713    0.4787
fun = @(m)1:size(m,1);
idr = cellfun(fun,inp,'uni',0);
[idr{:}] = ndgrid(idr{:}); % comma-separated lists
baz = @(m,r)m(r(:),:);
tmp = cellfun(baz,inp,idr,'uni',0);
out = horzcat(tmp{:})
out = 60×12
    0.3652    0.5458    0.7328    0.9886    0.4526    0.4298    0.2415    0.8247    0.3385    0.7161    0.8820    0.6369
    0.1774    0.4146    0.6908    0.7239    0.4526    0.4298    0.2415    0.8247    0.3385    0.7161    0.8820    0.6369
    0.5397    0.1625    0.8757    0.0996    0.4526    0.4298    0.2415    0.8247    0.3385    0.7161    0.8820    0.6369
    0.3652    0.5458    0.7328    0.9886    0.5996    0.3380    0.2754    0.7322    0.3385    0.7161    0.8820    0.6369
    0.1774    0.4146    0.6908    0.7239    0.5996    0.3380    0.2754    0.7322    0.3385    0.7161    0.8820    0.6369
    0.5397    0.1625    0.8757    0.0996    0.5996    0.3380    0.2754    0.7322    0.3385    0.7161    0.8820    0.6369
    0.3652    0.5458    0.7328    0.9886    0.2394    0.6964    0.4858    0.6903    0.3385    0.7161    0.8820    0.6369
    0.1774    0.4146    0.6908    0.7239    0.2394    0.6964    0.4858    0.6903    0.3385    0.7161    0.8820    0.6369
    0.5397    0.1625    0.8757    0.0996    0.2394    0.6964    0.4858    0.6903    0.3385    0.7161    0.8820    0.6369
    0.3652    0.5458    0.7328    0.9886    0.1400    0.8696    0.7921    0.3204    0.3385    0.7161    0.8820    0.6369