Turning a matrix into a vector issue where it truncates (easy question)

Question

David Shulkin 2019-12-18

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https://ww2.mathworks.cn/matlabcentral/answers/497163-turning-a-matrix-into-a-vector-issue-where-it-truncates-easy-question

编辑： Ridwan Alam 2019-12-18

I have matrix that is 8 by 2 (messageSymbolDemod) that i want to become a single vector that would be 16 by 1(finalMessage)

finalMessage(:,1) = messageSymbolsDemod(:)

I am randomly generating bits to fill in the matrix and when the second column of the matrix are all 0 the finalMessage becomes a vector of 8 by 1 which gives me an error on later in the code.

How do I make it that even if the second column has all zeros that my finalMessage vector is still 16 by 1.

Thanks in advance!

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Answer 1

Ridwan Alam 2019-12-18

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https://ww2.mathworks.cn/matlabcentral/answers/497163-turning-a-matrix-into-a-vector-issue-where-it-truncates-easy-question#answer_406846

编辑：Ridwan Alam 2019-12-18

在 MATLAB Online 中打开

finalMessage = reshape(messageSymbolsDemod,[],1); % from matrix to vector
finalMessage = padarray(finalMessage,16-length(finalMessage),'post'); % pad zero to ensure length = 16