reshape 4-dimension array
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I have an array dimensioned A(m,m,M,M). I would like to "reshape" this so that each mxm block is in the correct position in a B(m*M,m*M) matrix where the correct position is indicated by the third and fourth indices.
Can someone show me a straightforward way to do this?
采纳的回答
A = randi(9,3,3,5,5);
[~,M,~,N] = size(A);
B = permute(A,[1,3,2,4]);
B = reshape(B,[M*N,M*N])
Checking some random block:
X = 3;
Y = 5;
A(:,:,X,Y)
B(...
((X-1)*M+1):(X*M),...
((Y-1)*M+1):(Y*M))
更多回答（1 个）
Download this File Exchange package,
and do the whole thing in one line,
B=blkReshape(A,[m,m],[M,M]);
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