multiple columns to one column

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>>Hi I am kinds of practicing the matlab code to edit some data

I am trying to edit the multiple columns of data to one columns like the pictures above.

Anyone help me with this problem??

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Answer 1

[Azzi Abdelmalek]

A=[1 2 3;4 5 6;7 8 9];
B=A(:)

% Or Use reshape function

B=reshape(A,[],1)