Convert matrix size from 1xmxn to mxn

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Kris zenitis
Kris zenitis 2014-7-2
编辑： Erik Kruit 2020-10-13
I want to compare two matrices. One's size is mxn and the other matrix size 1xmxn. How can I convert 1xmxn to mxn??

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采纳的回答

Andrei Bobrov
Andrei Bobrov 2014-7-2
编辑：Andrei Bobrov 2014-7-2
Z = randi(250,1,3,4); % your matrix
one way
out = squeeze(Z)';
other
out = permute(Z,[3 2 1]);
or
out = reshape(Z,size(Z,2),[])';
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Erik Kruit
Erik Kruit 2020-10-13
编辑：Erik Kruit 2020-10-13
Googled really long on this! Thanks!
size(A)=1xMxN matrix. Unable to then imagsc(A(jpos,:,:))
error(using image Color data must be an m-by-n-by-3 or m-by-n matrix.)
Solved by:
Qi=squeeze(A(jpos,:,:));
imagesc(Qi);
% Squeeze used to convert the resulting 1xMxN matrix into a MxN matrix

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更多回答（1 个）

Piyush kant
Piyush kant 2019-4-9
Just adding some context to previous answer by Andrei Bobrov. Basic idea is to convert 1 x m x n matrix into m x n x 1 as matlab omits last dimension if it is 1. Therefore the method i prefer is:
NewMat=sqeeze(Z)';
Whereas other two functions does the same thing.

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