How do I write a for loop that stacks the columns of a matrix vertically into a single column array?

I have a 3x4 matrix and I need to stack the columns in order into a vertical stack.

Answer 1

[ag]

Hi Elias,

To reshape the matrix into a column vector, you can use the colon operator.

The below code demonstrates the same:

A = [1 2 3 4;
     5 6 7 8;
     9 10 11 12]

A = 3×4

1 2 3 4 5 6 7 8 9 10 11 12

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stackedMatrix = A(:)

stackedMatrix = 12×1

1 5 9 2 6 10 3 7 11 4

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For more details, please refer to the following MathWorks documentation: colon - https://www.mathworks.com/help/matlab/ref/double.colon.html?searchHighlight=%3A&s_tid=srchtitle_support_results_1_%253A#:~:text=Reshape%20the%20matrix%20into%20a%20column%20vector.

Hope this helps!