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How i can combine three or more than three matrix?

조회 수: 4(최근 30일)
Akash Pal
Akash Pal 2021년 8월 10일
편집: Stephen 2021년 8월 10일
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 ?

채택된 답변

Stephen
Stephen 2021년 8월 10일
편집: Stephen 2021년 8월 10일
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

추가 답변(1개)

KSSV
KSSV 2021년 8월 10일
편집: KSSV 2021년 8월 10일
y=cat(1,repmat(x1,size(x2,1),1),repelem(x2,size(x1,1),1));
Or
y=[repmat(x1,size(x2,1),1) ; repelem(x2,size(x1,1),1)];
  댓글 수: 2
KSSV
KSSV 2021년 8월 10일
Store the matrices into a cell and use cat.

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