How to put rows of a matrix in another matrix column?

• Hi everyone.

I have a 243938x1 Data matrix, and what I want to do is that I want to take the first 100 data (rows) of this matrix and put it in the first column of a defined Matrix Y.

then take the second 100 data (101-200) and put it in the second column of Y, and so on, till the Y Matrix is a 100x200 matrix.

can anyone help me with that? thanks .

Answer 1

[William Alberg]

data = rand(243938,1); % generate test data

n = 2; % Columns in Y

Y = nan(100,n); % initiate Y

% method 1, using forloop
for i = 1:n
	Y(1:100,i) = data( (1 + 100*(i-1)):(100*i));
	
end

% method 2, using reshape command
Y1 = reshape(data(1:(n*100)),[100,n]);

Here is 2 methods that scales if you want Y to have more than 2 columns

Alternatively, you can just use: Y = [data(1:100), data(101:200)]