combine two Matrix in one column

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Basem Nouh 2019-5-29

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https://ww2.mathworks.cn/matlabcentral/answers/464628-combine-two-matrix-in-one-column

评论： Alex Mcaulley 2019-5-29

Hi

i have two matrix A6*3 and B6*3

i want to combine all elements in one column but it must be sorted like the first element is A(1,1) then A(1,2) till A(6,3) then come all the elements from Matrix B

L=[A(1,1);A(1,2);A(1,3);A(2,1).......A(6,3);B(1,1);........B(6,3)];

thanks

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Answer 1

Alex Mcaulley 2019-5-29

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https://ww2.mathworks.cn/matlabcentral/answers/464628-combine-two-matrix-in-one-column#answer_377085

在 MATLAB Online 中打开

L = [reshape(A',[numel(A),1]);reshape(B',[numel(B),1])]

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Basem Nouh 2019-5-29

can u please explain how u did that ?

or how can we do it with loop ?

Alex Mcaulley 2019-5-29

在 MATLAB Online 中打开

You can see it doing each part separately. Try with this example:

A = [1,2;3,4]
A =
     1     2
     3     4
>> B = [5,6;7,8]
B =
     5     6
     7     8
     

And you want a column vector with all the values:

L = [1;2;3;4;5;6;7;8]

If you execute de following reshape statements you obtain a column vector for each matrix:

reshape(A',[numel(A),1]) %A is transposed because Matlab take the values by columns
                         % and you want to take them by rows
ans =
     1
     2
     3
     4                         
     