element wise product matrix-vector

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Alex
Alex 2020-4-4
评论： Alex 2020-4-4
I have a 200x5 matrix (Y) that includes 5 time series and a 5x1 vector of weights (w). For each t (row of the matrix), I need to compute the following element-wise product:
How can I do that?
Thank you

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采纳的回答

David Hill
David Hill 2020-4-4
S_t=Y_t.*w';
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Florian Floh
Florian Floh 2020-4-4
No, David's code does work. Matlab is smart enough to recognize, that the dimensions do not agree, so it performs it for each row.
But in theory, you are right, Alex. The Hadamard product requires to have matrices who's dimensions do match ;)

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Torsten
Torsten 2020-4-4
Y_t = bsxfun(@times,Y_t,w)

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