divide a matrix per a vector

Hi, I have a matrix A(7x1001) and a matrix B(1x7).
I'd like to divide the first row of A for the first colum(element) of B,
second row of A for the second column in B, and so on.
A and B are in attached

 Risposta accettata

per isakson
per isakson il 11 Dic 2019
Try
C = A ./ reshape( U2, [],1 );

5 Commenti

Paul Rogers
Paul Rogers il 12 Dic 2019
thanks but not working.
Guillaume
Guillaume il 12 Dic 2019
not working is a completely useless statement on its own.
It's not working because...
  • you get an error, if so what is the full text of the error message?
  • not giving you the result you expected, if so what did you get and how does it differ from what you expected?
We can't see your screen so can't guess why it's not working.
Completely unrelated, if A is 7x1001 why isn't B 7x1 instead of 1x7 to be consistent?
sorry, I get this:
Error using ./
Matrix dimensions must agree.
A is 7x1001 and B is 1x7
Oh, you're on a very old version, which doesn't have implicit expansion:
C = bsxfun(@rdivide, A, B(:));
However, again, why isn't B a column vector (7x1) instead of a row vector (1x7)? This would avoid the transpose/reshape and would make it consistent with the shape of A.
Paul Rogers
Paul Rogers il 12 Dic 2019
thanks man it's this!

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