Matrix in matlab equation
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A = 1*1000 matrix
I need another matrix Y which has all the rows as A
Y = 1000*1000 matrix
How to do that??
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John D'Errico
2022-3-12
编辑：John D'Errico
2022-3-12
An alternative to repmat is to use a dot product (if you are an old APL person like me, then the phrase "outer product" will come to mind.) Thus, if A is a 1x1000 vector, then
B = ones(1000,1)*A;
B will be a matrix that has rows identical to A, with 1000 copies thereof.
Similarly, if you instead want columns that are copies of the row vector A, you can do this:
C= A.'*ones(1,1000);
C will be a 1000x1000 matrix, with columns given as A, and 1000 such columns.
Note my use of the .' operator there, since if you use the ' operator instead, then it will form the conjugate transpose if A had any complex or purely imaginary elements.
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