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How to add columns to form a matrix?

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Ahmad Hasnain
Ahmad Hasnain 2018-12-12
回答： madhan ravi 2018-12-12
I am calculating a column vector in a FOR loop. I get N columns and I want to put them in a matrix.
for i = 1: N
dc(i) = ...
end
dcmatrix =[ dc(1) ; dc(2); .... ;dc(N) ]
%% The above example of dcmatrix is doing it manually. How can I do it with a code?%%
I calculate this dc column vector. I want to all the column vector in the form of matrix. I don't know how to do it.

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采纳的回答

Adam Danz
Adam Danz 2018-12-12
编辑：Adam Danz 2018-12-12
Create the matrix (or vector) from within the for-loop, not afterwards.
dcmatrix = nan(N, 1); %allocate the matrix (I don't know how many rows you need).
for i = 1:N
dcmatrix(i) = ... %On each loop, data is stored in row i
end

更多回答（2 个）

madhan ravi
madhan ravi 2018-12-12
dcMatrix = dc.'
madhan ravi
madhan ravi 2018-12-12
dc(i,1) % - > column vector
dc(1,i) % - > row vector

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