how can i change the dimensions of a matrix?

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naadiya khudabux
naadiya khudabux 2016-10-2
回答： Walter Roberson 2016-10-2
how can i change the dimensions of a matrix from 100000*5 to column vector 100000*1 without making any change of sequence of records

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KSSV
KSSV 2016-10-2
k = rand(100000,5); %random matrix
k1 = k(:,1) ;% first column
k2 = k(:,2) ;% second column
ki = k(:,i) ;% ith column, i=1,2,3,5
Read about matrix indexing.
Walter Roberson
Walter Roberson 2016-10-2
k = k(:,1);
This would lose information.
Is your intention that each element of the 100000 x 1 would be a vector of length 5? If so then
k_cell = mat2cell(k, ones(1, size(k,1)), size(k, 2));

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