how can i change the dimensions of a matrix?

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

Answer 1

[KSSV]

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.

[naadiya khudabux]

it would b 5 variable. i want to change matrix to a vector with same length .

[Walter Roberson]

k = k(:,1);

Answer 2

[Walter Roberson]

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));