How to concatenate array of matrices?

Question

I have an array of possibly million 3x3 matrices. What would be the fastest way to horizontally concatenate them in MATLAB without using for loop? Ideally I would like to do something simple like this

 [M(:,:,1) M(:,:,2) ... M(:,:,10000000)]

bla · Accepted Answer · 2013-07-25 22:31:19Z

5

the way the question is put is to convert a big 3-D matrix M(:,:,j) to a concatenated 2-D one. For that just use reshape, for example:

M=reshape(M,size(M,1),[]);

answered Jul 25, 2013 at 22:31

bla

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